Percentage Calculator

• Offers 10 percentage calculation modes — what percent X is of Y, Y% of X, increase or decrease X by Y%, percentage difference, percentage change, reverse value from a percentage, share of total, compound growth rate, and discounted price
• Calculates instantly as you type; results update in real time with no "Calculate" button needed
• Optional "Apply value" field — apply the result to another number and see the applied value at once
• Save results to your local history, copy any result with one click, and view the formula used
• Completely free, no sign-up required; all calculations run locally in your browser

1. Open the tool page — no download or installation needed
2. Pick the calculation mode you need from the dropdown
3. Enter your values in the X and Y fields; the result appears automatically as you type
4. Optionally enter an "Apply value" to see the result applied to another number
5. Use the "Save", "Formula", or "Copy" buttons to keep, inspect, or copy the result

• This tool is completely free and requires no registration or login
• All calculations run locally in your browser — your data never leaves your device
• Your calculation history is stored in your browser and can be cleared at any time

Free online percentage calculation tool, supports multiple calculation modes such as percentage calculation, percentage increase/decrease, percentage difference, etc. Real-time calculation results, save calculation history, suitable for financial analysis, data statistics, discount calculation, growth rate calculation and other scenarios, with a simple and easy-to-use interface.

Open the tool page — no download or installation needed Pick the calculation mode you need from the dropdown Enter your values in the X and Y fields; the result appears automatically as you type Optionally enter an "Apply value" to see the result applied to another number Use the "Save", "Formula", or "Copy" buttons to keep, inspect, or copy the result

This tool is completely free and requires no registration or login All calculations run locally in your browser — your data never leaves your device Your calculation history is stored in your browser and can be cleared at any time

Yes, Percentage Calculator is completely free. No download or installation required — it runs right in your browser.