Percentage Calculator
Work out a percentage of a number, and see that number increased or decreased by the same percentage. The results update as you type.
About Percentage Calculator
Percentages come up everywhere, from tips and taxes to discounts and grades. This calculator takes a percentage and a value and shows the result right away, along with the value increased and decreased by that percentage.
It saves you from reaching for a phone calculator and remembering whether to divide or multiply, since the common percentage questions are answered in one view.
How to Use
- Enter the percentage.
- Enter the value it applies to.
- Read the percentage of the value, plus the increased and decreased amounts.
Frequently Asked Questions
How do I find a percentage of a number?
Multiply the number by the percentage and divide by 100. Enter both values here and the tool does it for you instantly.
Can it do percentage increase and decrease?
Yes. Alongside the percentage of the value, it shows the value after adding and after subtracting that percentage.
Is the tool private?
Yes. All math runs in your browser and nothing is uploaded.
About Matt George
I'm Matt George, a software engineer in the startup space. I run my own shop building software for early-stage founders, and I love making free tools and experiences that people actually use. Enjoy using Percentage Calculator!