Percentage Calculator

Percentage Calculator

Solve every kind of percentage problem — of a number, increase, decrease and difference.

About this tool

The Percentage Calculator handles all the common cases: what is X% of Y, what percent is X of Y, percentage increase or decrease, and percentage difference. Each result comes with a clear explanation so you understand the math, not just the answer. Great for discounts, grades, tips and statistics. Runs fully in your browser.

How to use the Percentage Calculator

  1. 1

    Choose a mode

    Select the type of percentage problem you want to solve.

  2. 2

    Enter your numbers

    Type the values into the fields.

  3. 3

    Get the answer

    Read the result with a step-by-step explanation.

Frequently Asked Questions

How do I calculate a percentage increase?

Subtract the old value from the new value, divide by the old value and multiply by 100 — the calculator does this for you.

Can it show the steps?

Yes, each mode displays a short explanation of how the result was derived.

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