Percentage Calculator – Calculate % Free
Three powerful percentage calculations in one: find a percentage of a number, calculate what percent one number is of another, and find percent change.
What is X% of Y?
X is what % of Y?
Percentage change
How to Use
- 1
Choose the type of percentage calculation
- 2
Enter the required numbers in the fields
- 3
See the result instantly
Frequently Asked Questions
How do I calculate a percentage of a number?
Use mode 1: enter the percentage and the base number, then click Calculate.
How do I find what percentage one number is of another?
Use mode 2: enter the part and the total, and the tool shows the percentage.
How is percentage change calculated?
Percentage change = ((new value – old value) / old value) × 100.
Is the calculator free?
Yes, completely free and no registration required.
Solve any percentage question
A percentage calculator answers the everyday questions that trip people up: what is X% of Y, what percent one number is of another, and the percentage increase or decrease between two values. Enter the numbers and read the answer with the working shown.
It removes the mental gymnastics and the risk of a slipped decimal point.
Everyday uses
- Working out discounts, tips and tax.
- Calculating grades, growth and change over time.
- Comparing two figures as a percentage.
- Shopping the sales? Try the discount calculator or the tip calculator.
Instant and accurate
Calculations run in your browser and update as you type, with no rounding surprises.