Percentage Calculator

Calculate percentages, increases, and decreases instantly.

1. What is X% of Y?
What is % of ?

30

2. X is what percent of Y?
is what percent of ?

25%

3. Percentage Increase / Decrease
From to

Up 50%

About the Percentage Calculator

Welcome to our free online Percentage Calculator. Designed for fast, everyday use, this utility helps you crunch numbers instantly. You don't need to be a math whiz or remember complex algebraic formulas to get accurate results. We built this calculator to run entirely on the client-side within your browser. That means the math is calculated on your own device with absolute privacy and zero server delays.