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Percentage Increase Calculator

Add a percentage to a number, or find the percentage increase between two values.

  1. Enter your numbers
  2. Results update as you type
  3. Copy the answer or share the link
Runs in your browser. Your data and files never leave your device.

About the Percentage Increase Calculator

Use this calculator to increase a number by a percentage — a pay rise, a price rise, population growth — or to find the percentage increase from one value to another.

How does the Percentage Increase Calculator work?

To increase a number by a percentage, multiply it by (1 + percentage ÷ 100). To find the increase between two numbers, divide the difference by the original and multiply by 100.

Percentage Increase Calculator formula

new value = original × (1 + p ÷ 100)
% increase = (new − original) ÷ original × 100

Example

A $80,000 salary with a 4% rise: 80,000 × 1.04 = $83,200.

Rent going from $500 to $540 a week is an 8% increase: 40 ÷ 500 × 100 = 8.

Guides

Frequently asked questions

How do I add 10% to a number?

Multiply by 1.10. For example 250 × 1.10 = 275.

What if the new value is smaller?

The calculator shows it as a decrease instead. Use the Percentage Decrease Calculator for discounts and reductions.