Percentage Calculator
CalculateWork out what X% of a number is, what one number is as a percent of another, and percentage increase or decrease — all in one place.
Runs entirely in your browser — nothing is uploaded
What is X% of Y?
% of
30
X is what % of Y?
is what % of
25%
% change from X to Y
from to
25%
Frequently asked questions
What can it calculate?+
What X% of a number is, what one number is as a percentage of another, and the percentage increase or decrease between two numbers.
Is my data sent to a server?+
No. Calculating happens entirely in your browser using built-in web APIs — nothing is uploaded, stored, or logged.