Percentage Calculator
Four percentage calculators in one — find percentages, reverse percentages, and percentage change instantly.
What is X% of Y?
What is
% of
?
X is what % of Y?
is what % of
?
Percentage Change (from → to)
From
to
Add or Subtract a Percentage
%
About this Percentage Calculator
This free percentage calculator covers the four most common percentage problems: finding a percentage of a number, finding what percentage one number is of another, calculating percentage change, and adding or subtracting a percentage from a number.
How to calculate a percentage
To find X% of Y, multiply Y by X and divide by 100. For example, 20% of 150 = 150 × 20 / 100 = 30.
FAQ
How do I calculate percentage increase?
Use the "Percentage Change" section. Enter the original value and the new value — if the result is positive, it's an increase; if negative, it's a decrease.
How do I add a percentage to a number?
Use the "Add or Subtract a Percentage" section. For example, adding 20% to 100 gives you 120.