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Math & Calculators

Free Percentage Calculator Online

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Ubify Intelligence Team

EDITORIAL TEAM

~1 min read
~156 words
VERIFIED JUNE 2026

About This Tool

The Percentage Calculator handles the three most common percentage problems: what is X% of Y, X is what percent of Y, and percentage change between two values. Useful for discounts, tips, tax calculations, and growth rates. Enter your values and the result appears instantly. Free, no account, runs in browser.

How to Use

  1. 1

    Select the type of percentage calculation you need.

  2. 2

    Enter the values in the corresponding fields.

  3. 3

    The percentage result appears instantly with the formula shown below.

Frequently Asked Questions

How do I calculate a percentage increase?

Subtract the old value from the new, divide by the old value, and multiply by 100. For example, from 80 to 100: (100-80)/80 × 100 = 25% increase.

What is the difference between percentage and percentage points?

If something goes from 10% to 15%, it increased by 5 percentage points, but by 50% relatively. The calculator shows both.

Is this percentage calculator free?

Yes. Completely free with no account required.