Percentage Calculator
Calculate simple values, markup, dynamic discount margins, and percentage changes quickly.
Use this free percentage calculator to work out discounts, markups, increases, and quick percentage splits in seconds. It is built for shoppers, finance tasks, and everyday calculations that need fast, accurate results.
How to use
- Choose the percentage calculation mode you need.
- Enter the values for X and Y or the numbers you want to compare.
- Review the result, explanation, and any visual breakdown.
- Copy the result or reset the form for another calculation.
Recent calculations
Your last 20 calculations will appear here.
Common percentages of
Percentage increase needed to recover a loss
If a value drops by X%, it takes a bigger percentage gain to get back to where it started.
| Loss | Recovery needed |
|---|---|
| -10% | +11.11% |
| -20% | +25% |
| -30% | +42.86% |
| -40% | +66.67% |
| -50% | +100% |
| -60% | +150% |
| -70% | +233.33% |
| -80% | +400% |
| -90% | +900% |
Fraction ↔ percentage cheat sheet
Tool overview
Percentage Calculator works out common percentage problems for shopping, budgeting, schoolwork, and everyday decisions. It runs in your browser for quick results without sign-up or downloads.
Useful percentage calculations
- Find a percentage of a number for discounts, tips, and markups.
- Compare two values and calculate the percentage change.
- Work backward from a part and percentage to find the whole.
Results you can trust
Enter the values that match the selected calculation mode and the result updates immediately. The calculator keeps the arithmetic visible so you can check how the answer was produced.