Percentage Calculator
Calculate percentages instantly. Runs entirely in your browser — nothing you type is ever uploaded.
What can you calculate?
PercentPoint covers the four percentage questions people look up most: what a percentage of a number is (20% of 150), what percent one number is of another (25 is what percent of 200), the percentage increase or decrease between two numbers (going from 50 to 75), and the result of increasing or decreasing a number by a percentage (80 increased by 15%). Pick a calculation, enter your numbers, and the result updates as you type.
How it works
Every calculation runs directly in your browser using plain arithmetic — nothing is sent to a server, so it works even offline once the page has loaded.
Frequently asked questions
Is this free to use?
Yes. There's no sign-up and no limit on how many calculations you run.
Do you store what I type?
No. Every calculation happens entirely client-side in your browser. See the privacy policy for details.
What's the difference between percentage change and percentage points?
Percentage change is a relative change (going from 50 to 75 is a 50% increase). A percentage point is a plain difference between two percentages (going from 50% to 75% is a 25 percentage point increase, not 50%). The percentage-change mode here calculates the relative version.
Which calculations are supported?
Four common questions: what a percentage of a number is, what percent one number is of another, the percentage increase or decrease between two numbers, and the result of increasing or decreasing a number by a percentage.