Percentage Calculator
Three handy calculators for common percentage operations: find a percentage of a number, determine what percent one number is of another, or calculate percentage change.
What is X% of Y?
What is
% of
=?
X is what % of Y?
is what % of
=?
Percentage change from X to Y
From
to
=?
What Are Percentages?
A percentage is a way of expressing a number as a fraction of 100. The word comes from the Latin “per centum,” meaning “by the hundred.” Percentages are used everywhere — from discounts and taxes to statistics and scientific data.
Three Calculators in One
- What is X% of Y?— Multiply a number by a percentage to find a portion. Useful for tips, discounts, and tax calculations.
- X is what % of Y?— Determine what fraction one number is of another. Great for test scores, budgets, and comparisons.
- Percentage change from X to Y— Calculate the increase or decrease between two values. Essential for financial analysis and growth tracking.
How to Use This Tool
- Enter numbers into the fields of the calculator you need.
- Results appear instantly as you type.
- All calculations are performed locally in your browser.