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Percentage Calculator
A quick, all-in-one percentage calculator: find a percentage of a number, work out what percent one number is of another, and compute the percentage increase or decrease between two values.
What is X% of Y?
% of=30
X is what percent of Y?
is20%of
Percentage increase / decrease
Fromto=▲ 25%
🔒 This tool runs entirely in your browser. Your data is never uploaded.
Frequently asked questions
What can it work out?＋
Three common calculations: X% of Y, X is what percent of Y, and the percentage change from one number to another.
How is percentage change calculated?＋
As the difference divided by the original value, so a rise from 50 to 75 is a 50% increase.
Is my data uploaded?＋
No — it's calculated locally in your browser.