Percentage calculator

Type numbers into any line and the answer appears instantly.

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🔒 Calculated in your browser. Nothing you enter is sent anywhere.

How to use

  1. Pick the line that matches your question.
  2. Enter the two numbers.
  3. Read the answer next to it — it updates as you type.

Percentage calculator

Percent of: X% of Y = Y × X ÷ 100. What percent: X ÷ Y × 100. Percent change: (new − old) ÷ |old| × 100, where a positive result is an increase and a negative result is a decrease. Answers are rounded to four decimal places.

Frequently asked questions

How do I work out a discount?

Use the first line: 20% of 1,500 is 300, so the price after a 20% discount is 1,200.

Why is the change blank when the first number is 0?

A change from zero cannot be expressed as a percentage.

Is percent change the same as percentage points?

No. Going from 10% to 12% is a change of 2 percentage points, or a 20% increase.

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