Percentage Calculator

Calculate percentages quickly. Find what percent one number is of another, calculate a percentage of a number, or find the original number from a percentage.

Part of our Math & Percentage Calculators collection.

Percentage Calculator

Free online calculator

What do you want to calculate?

Results update automatically as you type

How to Use This Calculator

1
Select the type of percentage calculation.
2
Enter values for X and Y.
3
Get your result instantly.

Percentage Formulas

What is X% of Y?      → (X / 100) × Y
X is what % of Y?     → (X / Y) × 100
X is Y% of what?      → X / (Y / 100)

Example Calculation

Example: What is 15% of 200?

Inputs

calcType: percentOfvalueX: 15valueY: 200

Result

(15 / 100) × 200 = 30

Frequently Asked Questions

How do I calculate a percentage increase?

Formula: ((New − Old) / Old) × 100.