Percentage Calculator
Solve common percentage problems: find a percent of a number, reverse percentages, or percent change.
How it works
- 1
Enter your values in the fields.
- 2
Results update automatically as you type.
- 3
Use Reset to clear and try another scenario.
Why use this calculator
- Three calculation modes
- Instant results
- Useful for school and shopping
- No clutter
Everyday percentage math
Percentages appear in discounts, tips, grades, and statistics. This calculator switches modes so you do not need separate tools.
Percent change
Percent change compares an old value to a new value and shows increase or decrease as a percentage.
Frequently asked questions
What does mode “X% of Y” do?
It multiplies Y by X/100.
Can results be over 100%?
Yes, for growth or when X is larger than Y.
Does it round?
Results are formatted with up to four decimal places when needed.