All 237+ Free Online Tools

View and inspect 3D models in GLTF, GLB, OBJ, STL, and FBX formats. Features orbit controls, wireframe mode, lighting presets, and screenshot export.

Scan barcodes from images or camera. Supports EAN-13, EAN-8, UPC-A, UPC-E, Code 128, Code 39, ISBN, and more. Search products instantly.

Create chord diagrams for guitar, ukulele, and bass. Choose from chord library or build custom fingerings. Export as PNG or SVG.

Test how your images and designs appear to people with different types of color vision deficiency including protanopia, deuteranopia, tritanopia, and more

Free online drawing canvas and whiteboard. Draw, sketch, and create with brushes, shapes, colors, undo/redo, and export to PNG or JPG.

Create animated GIFs from multiple images with custom frame timing, size presets, and loop options. Drag and drop to reorder frames, set individual delays, and preview your animation in real-time.

Annotate images with arrows, shapes, text, highlights, and blur regions. Perfect for screenshot markup, tutorials, and documentation.

Remove backgrounds from images with smart edge detection. Supports color picker, corner detection, and preset colors with adjustable tolerance.

Process multiple images at once with consistent settings. Apply resize, format conversion, compression, and filters to bulk images efficiently.

Create beautiful photo collages with flexible grid layouts. Features customizable spacing, background colors, borders, and multiple arrangement options.

Professional color grading: adjust brightness, contrast, saturation, hue, shadows, highlights, and temperature. Create cinematic looks with color curves.

Extract dominant, vibrant, or muted colors from images. Generate color schemes with HEX, RGB, HSL values and export palettes for design projects.

Compress images to reduce file size while maintaining visual quality. Supports lossy and lossless compression with real-time preview and size comparison.

Crop and trim images with precision visual selection. Features aspect ratio presets (1:1, 16:9, 4:3), free-form cropping, grid overlays, and pixel-perfect adjustments for professional results.

Compare two images with a perceptual engine (pixelmatch) that ignores anti-aliasing, or an exact byte engine. Groups changes into regions with bounding boxes, reports SSIM, and handles size mismatches with an explicit policy.

Detect and highlight edges using Sobel, Canny, and other algorithms. Features threshold control, direction filters, and contour extraction.

Apply professional photo filters: blur, sharpen, grayscale, sepia, invert, vintage, and more. Features preset effects and custom adjustments for stunning results.

Convert images between PNG, JPG, WebP, AVIF, BMP formats. Features quality control, transparency support, and batch conversion for efficient workflow.

Analyze color distribution with RGB, luminance, and individual channel histograms. Features exposure analysis, statistics, and comparison tools.

Strip EXIF, GPS, camera data and other metadata for privacy. Features selective removal, batch processing, and metadata preview before removal.

Read EXIF, IPTC, XMP metadata from images. View camera settings, GPS location, date taken, color profiles, and technical image properties.

Create pixelated effects with square, circle, diamond, or hexagon shapes. Features presets for retro gaming, mosaic art, and privacy blur effects.

Resize and scale images with smart aspect ratio control. Supports custom dimensions, percentage scaling, social media presets, and batch resizing while maintaining image quality.

Rotate images to any angle and flip horizontally or vertically. Features precise degree control, 90° quick rotations, and straightening tools.

Extract text from images using advanced OCR. Supports 18+ languages, page segmentation modes, confidence scores, and multi-format export.

Convert images to ASCII text art with customizable character sets. Features width control, color/monochrome modes, and multiple character density options.

Convert images to Base64 encoded strings for embedding in CSS, HTML, or JavaScript. Multiple output formats available.

Generate favicons and app icons in all required sizes. Supports iOS, Android, Windows, and web platforms with one-click preset generation.

Convert raster images (PNG, JPG) to scalable SVG vector graphics. Black & white or color tracing with adjustable threshold, smoothing, blur, and path options.

Enlarge images up to 4x while preserving quality. Uses advanced interpolation algorithms (Bilinear, Bicubic, Lanczos) with optional sharpening.

Add text or image watermarks to protect your photos. Features position control, opacity adjustment, tiled patterns, and batch processing for copyright protection.

Create memes with customizable text overlays. Add multiple text layers, adjust fonts, colors, and positions.

Generate placeholder images for mockups, wireframes, and development. Custom dimensions, colors, text. Presets for social media, avatars, web. Export as PNG, JPG, or SVG.

Scan QR codes from images or using your camera. Supports URLs, WiFi, contacts, emails, phone numbers, and more. 100% offline - no data uploaded.

Add beautiful backgrounds, shadows, and frames to screenshots. Perfect for presentations and social media.

Create sprite sheets from multiple images with JSON metadata, or slice existing sprite sheets into individual frames. Perfect for game development.

Optimize and minify SVG files by removing unnecessary metadata, comments, and whitespace while preserving visual quality.

Convert SVG vector graphics to high-quality raster images (PNG, JPG, WebP) with custom scaling and background options.

Twelve procedural patterns that tile exactly, verified live with a measured wrap error and a 3 by 3 repeat view. Perlin, fractal, ridged, Voronoi, marble, wood and geometric grids.

Ten-band graphic EQ that draws the real frequency response from the filter coefficients, matching the rendered audio to 0.03 dB. Clip-safe export, transparent bypass, per-band bandwidth control.

Fade in and out with five curve shapes: linear, exponential, logarithmic, S-curve and equal power. The graph, the preview and the exported file all come from the same function.

Convert between MP3, WAV, OGG, AAC, M4A and FLAC with a bitrate, sample rate, channel count and bit depth that all reach the encoder, and a panel that reports what was actually written.

Join clips end to end or stack them on one timeline, with an equal-power crossfade that holds the level through the join, BS.1770 loudness matching between files, and the merged result measured before you download it.

Shift pitch by semitones and cents with WSOLA, keeping the length or changing it like tape speed. Measures its own output and reports the error in cents: a perfect fifth lands within 0.5 cents.

Full-track spectrogram with a calibrated dBFS colour scale, labelled Hz axis, and log or linear frequency. Plus four live modes, microphone input, a peak-frequency and note readout, and PNG or WebM export.

Change tempo from 0.25x to 4x with WSOLA, holding pitch to within half a cent, or let pitch move with it like tape. Measures the output and shows how far the pitch actually went.

Transcribe audio into sheet music using the Basic Pitch neural network running in your browser. Handles humming, singing, solo instruments, piano, guitar, and full mixes; record straight from the mic or transcribe any section of a file. Beat-aligned quantization detects tempo, grid phase, and pickup bars; detection settings re-tune instantly without re-running the model, and an interactive piano roll lets you remove wrong notes by clicking. A/B playback compares the original audio with the quantized score (with a follow-along cursor), and exports cover MIDI, MusicXML, PDF, SVG, PNG, or print.

Cut a region out of any audio file, exact to the sample and measured at zero milliseconds of error. Waveform handles, real keyboard shortcuts, click-free cut fades, and WAV or MP3 output that matches its extension.

Normalize to real ITU-R BS.1770-4 loudness, within 0.04 LU of ffmpeg, with an enforced true peak ceiling. Measures the processed file and shows where it actually landed.

Turn audio into a waveform image in five styles, exported as PNG or real vector SVG. Reads every channel, shows true level in dBFS, and redraws correctly at any size.

Detect tempo from onset autocorrelation, within 0.20 BPM across thirteen known-tempo fixtures. Draws the beats it found and plays them back as a click so you can check by ear.

Attenuate everything below a threshold by a set number of dB, with hold, hysteresis and lookahead. Draws the gain reduction over the waveform and reports what it measured.

Record from a microphone with the browser's call processing off by default, a level meter in real dBFS with a clipping indicator, and a length taken from the audio rather than the clock.

Sample-accurate metronome from 20 to 400 BPM: no drift, tap tempo, subdivisions, swing, odd meters with correct accent groupings, a speed trainer, dropped bars, and WAV click-track export.

Convolution reverb with a reverberation time you set in seconds and the tool measures back off the response it built. Deterministic, so the download is the reverb you previewed; the impulse response is downloadable too.

Cut a ringtone, notification or alarm from any audio file, snap it to the beat so a repeat does not stutter, and set it to a loudness that holds up against the phone's own tones. Exports .m4r, .mp3 and WAV.

Find silent sections across every channel, not just the left. Threshold, hysteresis, minimum length, and cut padding all re-run instantly. Export a tightened WAV or MP3, split into clips as one ZIP, or save the timeline as CSV or JSON.

Read text aloud with any voice your system provides, with sentence-by-sentence progress that works even for voices that report no word boundaries, and a reading-time estimate calibrated from the voice you pick.

Generate band-limited test tones, sweeps and noise from 20 Hz to 20 kHz. Up to eight voices, note-name entry, binaural beats, and WAV export rendered from the same oscillators you hear.

Pull centred content out of a stereo mix by spectral masking or phase cancellation, with both stems from one pass and a measured report of how far the vocal moved and what it cost everything else.

Real pitch shifting in semitones that keeps the recording the same length, with speed as a separate control. Nine presets plus ring modulation, distortion, filters and echo.

Remove green screen backgrounds with professional chroma key. Adjustable color picker, similarity threshold, and edge blending. Export with transparency (MOV with alpha channel).

Record your screen, webcam, or both with system audio and microphone. No software install required - runs in browser. Choose recording area: full screen, window, or browser tab.

Compress videos up to 90% smaller without visible quality loss. Multiple quality presets, resolution scaling, and bitrate control. Perfect for email, social media, and web uploads.

Crop videos to any aspect ratio. Platform presets for Instagram (1:1, 9:16), YouTube (16:9), TikTok. Interactive crop area with rule of thirds grid. Real-time preview while cropping.

Convert videos between MP4, WebM, OGG, MOV, AVI, and MKV formats. Device presets for YouTube, Instagram, TikTok, iPhone, Android. Quality options from fast to high quality encoding.

Reads your file's real frame rate with FFmpeg, then converts to 24, 30, 60, 120 fps or any custom rate. Frame duplication, blending, or true motion interpolation, with CRF quality control and a verified output readout.

Create looping videos that repeat multiple times. Perfect for Instagram Stories, TikTok, background videos, and cinemagraphs. Set loop count (3x, 5x, 10x, 20x) with seamless joins.

Merge multiple video clips into one seamless video. Drag-and-drop reordering, preview before export, timeline visualization. Combine videos in any format with automatic re-encoding.

Remove or mute audio from video files. Create silent videos for social media, adjust volume levels, or completely strip the audio track. No uploads - 100% browser-based.

Encode by constant quality (CRF), average bitrate, or an exact target file size with two-pass. Aspect-safe scaling from 360p to 1440p, audio and container control, and a measured SSIM quality score on the result.

Reverse any video to play from end to start. Option to reverse audio too or mute. Create unique visual effects, boomerang videos, and creative content. Instant preview.

Rotate videos 90°, 180°, 270° or flip horizontally/vertically. Fix sideways videos, create mirror effects. Quick presets for portrait-to-landscape and selfie mirror fix.

Change video playback speed from 0.25x to 4x. Create slow motion effects, time-lapse videos, or speed ramps. Audio pitch preserved automatically with intelligent adjustment.

Burn subtitles permanently into video (hardcode). Support for SRT and VTT files. Customize font size and position (top/center/bottom). Perfect for social media where CC may not work.

Extract perfect thumbnails from any video. Auto-extract key frames or manual frame-by-frame selection. Export as JPEG, PNG, or WebP. Ideal for YouTube thumbnails and preview images.

Extract audio track from any video as MP3, WAV, AAC, OGG, or M4A. Quality presets from 128kbps to lossless. Perfect for podcasts, music extraction, and audio-only content.

Convert any video clip to high-quality animated GIF. Control frame rate, duration, and dimensions. Palette optimization for smaller file sizes. Perfect for memes, reactions, and social sharing.

Trim and cut videos precisely with frame-by-frame scrubbing. Set start/end points visually, preview clips in real-time, and export trimmed videos instantly. No upload required - runs 100% in browser.

Add custom text watermarks or image logos to videos. 9 position grid placement, adjustable opacity and size. Protect your content with branded watermarks. Drag-and-drop positioning.

Minify or beautify code in 7 languages: JavaScript, TypeScript, CSS, HTML, JSON, XML, SQL with compression visualization

Add syntax highlighting to code in 22 languages with 7 color themes, line numbers, and export to HTML

Generate haiku poems with 10 themes: Nature, Zen, Ocean, Love, Technology, Space. Save favorites, custom words, export as image

Bidirectional HTML and Markdown converter with GitHub Flavored Markdown, tables, live preview, and customizable output styles

Format, validate, minify JSON with JSONPath queries, tree view explorer, schema validation, diff comparison, and sort keys. Multiple indent styles

Generate JSON Schema from JSON data automatically. Infers types, formats (email, date, URI), required fields, nested objects, and arrays. Supports Draft-07 and 2020-12.

Generate placeholder text in 8 styles: Classic Lorem, Hipster, Corporate, Tech, Bacon, Pirate, Zombie, and Cat with words/sentences/paragraphs output

Full-featured Markdown editor with live preview, GitHub Flavored Markdown, syntax highlighting, table of contents, export to HTML/PDF, and multiple themes

Create Markdown tables with a visual editor. Add columns, rows, set alignment, and export perfectly formatted tables.

134 printable paper templates - dot grid, graph, isometric, hex, Cornell notes, handwriting guides, planners, calendars, manuscript paper, tablature, game boards and more. True vector PDF, SVG or PNG at any paper size.

Test regex patterns with live matching, capture groups, flags (g/i/m/s/u), pattern library with common expressions, find & replace, and detailed match breakdown

Format and beautify SQL queries with syntax highlighting. Supports multiple dialects and customizable formatting options.

Convert text between 12 cases: UPPERCASE, lowercase, Title Case, camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, dot.case, path/case, Sentence, and Alternating

Compare texts with side-by-side and unified diff views, line-by-line or character-level comparison, change statistics, and export to patch file

Encrypt text with 12 methods: Caesar, Vigenère, XOR, Atbash, ROT13, Base64, Morse, Binary, Hex, Affine, Rail Fence ciphers

Analyze text complexity, readability, and detailed statistics

Count words, characters, paragraphs, sentences with reading time, speaking time, readability scores (Flesch, Gunning Fog), and word frequency analysis

Format, validate XML with XPath queries, interactive tree view, XML-to-JSON conversion, and multiple color themes

Test and debug XPath expressions against XML documents. See matched nodes, values, and counts in real-time.

Format, validate, and convert between YAML and JSON formats. Live validation, syntax highlighting, and bidirectional conversion.

Convert multiple images into a single PDF document. Drag and drop to reorder pages, customize page size, orientation, and margins.

View and export comments and annotations

Reduce PDF file size with quality control

Crop PDF page margins to remove whitespace

Add custom headers and footers with page numbers

Extract embedded images (photos, logos) from PDF

Combine multiple PDF files into one document

Remove specific pages from a PDF document

Reorder pages in a PDF by dragging and dropping

Encrypt and password-protect your PDF documents. Set user and owner passwords, control printing, copying, and editing permissions with 128-bit AES encryption.

Rotate individual pages or all pages in a PDF

Add your signature to PDF documents. Draw, type, or upload your signature, then position it anywhere on the page. Perfect for contracts, agreements, and official documents.

Split a PDF into individual page files

Extract all text content from a PDF document

Arrange PDF pages for booklet printing

Render each PDF page as a PNG or JPG image

Add text watermarks to protect your PDFs

Keep and reorder chosen columns, with the list built from the widest row so a field beyond the header is not dropped

Rename columns under a stated convention, with two that would end up with the same name numbered rather than left to collide

Chain 34 cell transformations, each stating its own rule, with anything it could not do reported rather than passed through unchanged

Classify every column against a decider rather than a regex: calendar-checked dates, RFC 4291 addresses, and leading zeros kept out of integer columns

Validate columns against rules that name their definition: the email rule browsers enforce, a URL scheme allowlist, calendar-checked dates, and every failure explained

Remove duplicate rows with equality as a stated choice: case, spaces, accents and numbers each their own switch, and the rule in force shown

Diff two CSV files with the matching rule stated: a key that may repeat, or a real Myers diff, with every row accounted for

Format and validate against RFC 4180 by section, with output verified by reading it back

Combine CSV files with columns matched by name, so a reordered export still lands correctly, and every difference reported

Count what is missing in five categories that add up to the grid, with the tokens that mean missing your choice

Group and aggregate with the choices stated: what count counts, how group keys are matched, and which values were not numbers

Filter rows with each condition stating its rule: a cell that is not a number does not match a comparison, and an empty cell is not a zero

Find and replace with both halves stated: what the pattern matches, and whether $1 and $& in the replacement are patterns or text

Sort by any number of columns, with the comparison stated: numbers by value, dates by day, text by a collation you choose

Split a CSV by rows, file count, column value or a real byte-size maximum, with every input row accounted for exactly once

Per-column statistics with the definitions named: which of the nine quantile rules, sample and population deviation side by side, and why each cell was counted

Convert CSV to XLSX or ODS with cell types that keep leading zeros, long IDs and dates intact

Convert both ways, converting a type only when it reads back the same, and naming every value that cannot

Generate SQL that runs: identifiers quoted rather than stripped, values escaped per dialect, and every change to your data reported

View, sort and edit a CSV, with an undo stack that goes back exactly one step and a parse report that tells a broken quote from a ragged row

Generate linear barcodes with the quiet zone each standard requires, and read the bars back to check they are right

Encode and decode text, files and JSON as base64, base64url or hex, checked by decoding the result back

Hash files with MD5, SHA-1, SHA-2 and CRC, and verify them against a published digest or a whole checksum file

Convert between ten colour notations including Lab and OKLCH, check WCAG contrast, and simulate colour vision deficiency

Build a colour harmony that holds its lightness by rotating hue in OKLCH, with the contrast of every pair, a perceptually even tint and shade ramp, and what a colour blind reader sees

Convert between 30+ world currencies using live exchange rates from a public API

Encrypt a file with a password using AES-256-GCM, in a documented format that records everything needed to open it again, and read it back a megabyte at a time

Convert fonts between TTF, OTF, WOFF, and WOFF2 formats. Preview fonts with custom text, view font details, and generate CSS @font-face code.

MD5, SHA-1, SHA-2 and CRC digests of text or a file, with HMAC and verification against a published digest

Sign a JSON Web Token with HS, RS, PS or ES, generate a key pair, and check the result against the verifier

Decode a JSON Web Token and, given the secret or public key, actually verify its signature. Refuses alg: none and algorithm confusion

Convert text to Morse code and back against the ITU-R M.1677-1 table, and play it with the timing the Recommendation specifies

Spell text out in the radiotelephony alphabet of ICAO Annex 10 Volume II, with the Alfa and Juliett spellings the Recommendation actually gives, and read a spelled message back

Exact conversion between any bases on BigInt, with fixed-width integer views, bitwise algebra and IEEE-754

Convert a domain between Unicode and its xn-- form, both ways at once, with the length, validity and lookalike checks that decide whether it resolves

Generate QR codes and check each one scans by decoding it back before you download it

Turn a title into a URL slug in seven formats, with diacritics folded by NFD, Greek and Cyrillic romanised, every character accounted for, and collisions reported

Convert times through the real IANA rules, flagging local times that happen twice and ones that never happen

Convert across 18 categories using exact defining factors, with the definition behind every number shown

Convert between Unix timestamps and dates in any of 400+ time zones, in seconds, milliseconds, microseconds or nanoseconds

Percent-encode and decode against four character sets, build query strings, and take a URL apart

Generate UUID v1, v3, v4, v5, v6 and v7, ULID, NanoID, CUID2 and Snowflake IDs, and read any of them back

Generate .gitignore files for any project. Pre-built templates for Node.js, Python, React, Java, Go, Rust, and 50+ more technologies.

Decode an X.509 certificate field by field, check which host names it covers, and verify that each certificate in a chain was signed by the one above it

Create reusable checklists with nested items, 4 templates (Project Launch, Travel Packing, Weekly Review, Event Planning), progress tracking, and Markdown export

Pick a colour and read it back in ten notations, every one checked to parse back as the same colour. WCAG contrast ratios, the nearest CSS colour name, and colour vision simulation.

Build a cron expression and see its next runs in the zone the job will actually run in, with the day-of-month OR day-of-week rule and the daylight saving rules of crontab(5) applied

Build a Content Security Policy and see what a browser will actually apply, including the CSP3 rules that silently discard what you wrote.

Build a PKCS#10 certificate signing request with subject alternative names, RSA, ECDSA or Ed25519. Signed and verified in the page before you send it to a CA.

Create custom CSS keyframe animations visually. Add keyframes, adjust timing, and preview animations in real-time.

Create custom border radius with individual corner control, linked/unlinked mode, px/% units, interactive corner sliders on preview, and 12 shape presets

Design complex box shadows with multi-layer support, inset shadows, visibility toggle, layer reordering, opacity control, and 12 professional presets

Design a CSS button and see every state measured against WCAG on the page colour you name: resting, hover, active, focus and disabled, plus the focus ring and the border.

Create custom CSS clip-path shapes visually. Drag points to customize polygons, circles, and complex shapes.

Visual layout builder for CSS Flexbox and Grid. Toggle between modes, adjust properties interactively, use presets, and copy generated CSS code.

Build a CSS gradient and choose the colour space it is interpolated in, with the colour it keeps through the middle measured and shown.

Create favicons from text, emojis, or images with all device sizes (16x16 to 512x512), background/text color customization, border radius control, and batch download

Discover beautiful font combinations with 12 curated Google Fonts pairings, live preview, mood filters, usage tags, CSS import/variables export, and favorites

Create beautiful frosted glass CSS effects with customizable blur, transparency, and border settings.

Encode and decode HTML character references against the full WHATWG table of 2,231 names, with the numeric remapping and the context rules a browser applies.

All 64 status codes the IANA registry has assigned, plus the 21 that nginx, Cloudflare, AWS and Laravel ship without one. Type any number and get an answer.

Create professional invoices and download as PDF. Add items, taxes, discounts, and customizable details.

Write SEO, Open Graph and X card tags with every value escaped for an attribute, checked against the protocol, and the cut shown per platform.

Generate realistic fake data for testing and development. Create names, usernames, emails, addresses, phone numbers, and more. Export to JSON or CSV format

Paste a page head and see the card each platform actually gets: the title cut at its own limit, the image measured, and what the protocol says is missing.

Generate passwords from the Web Crypto generator by rejection sampling, with the entropy stated exactly from the alphabet, the cost of every rule computed, and crack times against four named attacker models

An upper bound on how strong a password is, from the patterns that actually make one guessable, with the model and its limits stated in full.

Convert certificates, requests, CRLs, keys and PKCS#7 bundles between PEM text and DER binary. The object type and the PEM label are read from the bytes, not asked for.

Focus timer using Pomodoro technique with work/break sessions, circular progress, presets (Classic 25/5, Deep Work, 52/17), stats tracking, and auto-start options

Write a robots.txt by the RFC 9309 rules, then test a URL against it and see which rule wins and why.

Generate SSL/TLS certificates for local development, with hostnames placed in the Subject Alternative Name where browsers look. Exports PKCS#8, PKCS#1 and PKCS#12, with fingerprints and install config.

Build a Subresource Integrity attribute, with more than one hash if you want, and check an existing one against the file it is meant to pin.

Generate an SSH key pair in the OpenSSH format ssh-keygen writes: Ed25519, ECDSA or RSA, with the fingerprint and randomart it prints.

Read the certificate chain a server sends and say whether it is complete, in order and in date, and build the OpenSSL commands that fetch it.

Every fact about an IPv4 or IPv6 block, plus splitting, merging, range to CIDR, and which special-purpose range an address falls in

Dual-mode time tracker with stopwatch including lap times (fastest/slowest highlighting), countdown timer with presets, sound alerts, and browser notifications

Organize tasks with priorities (low/medium/high), due dates, tags, smart filtering, search, sorting, stats dashboard, import/export, and local storage persistence

Check a link for typosquats, brand-in-subdomain tricks, mixed-alphabet homographs, and hidden destinations. Public Suffix List parsing, explainable per-rule scoring, and the link is never fetched.

Read a user agent string and mark every field: read from a token, a frozen constant, or something the string cannot answer at all.

Find your public IP address, location, timezone, and ISP information instantly via the ipapi.co lookup service

Build a personal knowledge base with [[bidirectional links]], tags, backlinks, search, note metadata, and import/export. Implements Zettelkasten method

Plot 3D surfaces from z = f(x, y), polar z = f(r, theta), or fully parametric equations. Exact evaluation via mathjs, real holes where a function is undefined, and OBJ or STL export for 3D printing.

Calculate aspect ratios, resize dimensions while maintaining proportions. Common presets for video, photo, mobile screens, and social media

Calculate your Body Mass Index with metric or imperial units. Visual scale, health categories, ideal weight range, and health tips.

Calculate molar mass, pH, and molarity for chemistry problems

Calculate exact age in years, months, and days. Find date differences, countdowns, zodiac signs, and detailed time breakdowns

Solve linear and quadratic equations with step-by-step solutions

Calculate loans, mortgages, compound interest, and ROI

Add, subtract, multiply, divide, and simplify fractions

Calculate Greatest Common Divisor and Least Common Multiple of multiple numbers. Shows prime factorization and common divisors.

Calculate area, perimeter, volume, and surface area of shapes

Plot and visualize mathematical functions with multiple overlays

Perform matrix operations including multiply, transpose, and inverse

Calculate percentages, percentage changes, increases, decreases, and find original values. Multiple calculation modes with formulas.

Calculate force, energy, kinematics, and power in physics

Check if a number is prime and find prime factorization

Advanced calculator with scientific functions and history

Calculate mean, median, mode, standard deviation and more

Add, subtract, and calculate time differences

Calculate tips and split bills easily. Service quality presets, custom percentages, bill splitting, and rounding options.

Generate complete truth tables for boolean expressions. Supports AND, OR, NOT, XOR, NAND, NOR, IMPLIES, IFF with sub-expression evaluation and tautology detection.

Slide numbered tiles to combine and reach 2048! Features touch/swipe support, undo functionality, and score tracking

Casino blackjack card game. Hit, stand, or double down! 6-deck shoe, dealer stands on 17, blackjack pays 3:2

Brick breaker with continuous collision, so the ball never passes through a brick and bounces off the face it actually hits. Power-ups, boss levels, upgrades and achievements.

Cellular automaton on a board up to 300 by 300, with RLE import and export, custom B/S rulestrings (HighLife, Seeds, Day and Night), pattern stamping, and pan and zoom.

Standard dice notation with keep, drop, advantage, exploding dice and re-rolls. Shows the exact probability before you roll, and a seed makes any roll reproducible from a shared link.

Navigate through pipes in this side-scrolling game. Features animated bird, increasing difficulty, and high scores

Word guessing game with 5 categories (animals, countries, food, technology, sports), SVG animation, and hints

Code-breaking puzzle game. Guess the secret color code with feedback pegs. Three difficulty levels

Card matching memory game with 4 emoji themes (animals, food, sports, nature), 3 difficulty levels, and timer

Classic minesweeper with right-click flagging, timer, first-click safety. Beginner, Intermediate, Expert modes

Color pattern memory game with audio feedback. Repeat the sequence as it gets longer. Three speed settings

Classic snake game with three speed levels, pause/resume, mobile D-pad controls, and high score tracking

Sudoku puzzle generator and solver with auto-generated valid puzzles, hint system, and error highlighting

Classic block-stacking puzzle game. Rotate and place falling tetrominoes to clear lines. Level up for faster drops.

Classic tic-tac-toe game with AI opponent using minimax algorithm. Three difficulty levels: Easy, Medium, Hard

Test your knowledge with trivia! 5 categories (science, history, geography, entertainment, sports), timer, streaks

Test your typing speed and accuracy with WPM tracking, accuracy measurement, high scores, and three difficulty levels

Click-based reflex game. Whack moles for points, grab golden moles for bonus, avoid bombs! Combo system

Guess the 5-letter word in 6 tries. Color-coded hints show correct, present, and absent letters. Track your stats and streaks.