Percentage Calculator
Four quick percentage calculations in one place, updating as you type.
What is of ?
?
Percentage change from
Change of
✓ Free forever✓ No sign-up✓ No watermark✓ Files never leave your device
How to use the Percentage Calculator
- Pick the question that matches what you need.
- Type your two numbers.
- Read the answer, which updates as you type.
Use the first row for questions like what is 15% of 80. Use the second to find what share one number is of another, and the third for percentage change between an old and a new value, such as a price rise. The last row shows a number increased and decreased by a percentage, for discounts and markups.
Why use Toolbox
Frequently asked questions
How do I calculate a percentage of a number?
Multiply the number by the percentage and divide by 100. For example, 15% of 80 is 80 × 15 ÷ 100 = 12.
How do I calculate percentage change?
Subtract the old value from the new value, divide by the old value, and multiply by 100. A positive result is an increase and a negative one is a decrease.
Is this tool really free?
Yes, always free with no sign-up, no watermark and no file limits set by us.
Are my files uploaded anywhere?
No. Everything happens inside your browser, so your files and text never leave your device.