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Add, subtract, multiply, divide, and simplify fractions
Calculate aspect ratios, resize dimensions while maintaining proportions. Common presets for video, photo, mobile screens, and social media
Calculate exact age in years, months, and days. Find date differences, countdowns, zodiac signs, and detailed time breakdowns
Perform arithmetic, scientific, and engineering calculations right in your browser. This calculator handles everything from basic addition to trigonometric functions, logarithms, and exponent operations. Memory functions (M+, M-, MR, MC) streamline multi-step workflows, and a running history lets you review or reuse previous results. Full keyboard support means power users can type expressions naturally.
The calculator evaluates expressions using standard order of operations (PEMDAS/BODMAS), so parentheses, exponents, multiplication, division, addition, and subtraction resolve in the correct sequence without manual intervention. Trigonometric functions operate in both degree and radian modes, and built-in constants like π and e eliminate tedious manual entry. The calculation history panel preserves every result from your session, making it easy to backtrack or chain results into new expressions.
Evaluate algebra, trig, and calculus expressions while studying, with history to double-check your steps.
Run unit conversions, power calculations, or signal-processing math without opening a spreadsheet.
Figure out tip splits, recipe scaling, or discount percentages on the fly.
Yes. Expressions are evaluated following PEMDAS/BODMAS rules. Use parentheses when you need to override the default order.
Absolutely. Use number keys, +, -, *, / for operators, Enter to evaluate, and Escape to clear.
History is kept for the duration of your current browser session. Refreshing the page clears it.
All processing happens directly in your browser. Your files never leave your device and are never uploaded to any server.