Loading tool...
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
Calculate tips and split bills easily. Service quality presets, custom percentages, bill splitting, and rounding options.
What is 15% of 230? What percentage is 45 of 300? How much does a price change from 80 to 100? This tool answers all three types of percentage questions with a single input form.
Figure out the sale price after a percentage-off discount.
Convert raw scores into percentages.
Compute growth rates, margin percentages, or markup values.
All processing happens directly in your browser. Your files never leave your device and are never uploaded to any server.