Free online percentage calculator. Calculate what percentage X is of Y, find X% of Y, calculate percentage change, and increase/decrease by a percentage. Great for budgeting, homework, and everyday calculations. It is completely free, requires no registration, and all processing happens locally in your browser — your data never leaves your device.
Yes, it is 100% free with no registration and no usage limits.
Absolutely. All processing runs locally in your browser — nothing is uploaded to any server.
Free online percentage calculator. Calculate what percentage X is of Y, find X% of Y, calculate percentage change, and increase/decrease by a percentage. Suitable for developers, students, and everyday users.