Free Percentage Calculator Online — Calculate % Instantly

Percentages are everywhere in daily life — shopping discounts, tax rates, investment returns, exam scores, tips at restaurants. Yet many people struggle to calculate them quickly in their head. Our Percentage Calculator handles five common scenarios in one click.

Five Calculation Modes

The tool supports five modes: "X% of Y" calculates what a percentage of a number is, "X is what % of Y" finds the percentage one number represents of another, "% Change" calculates the increase or decrease between two numbers, "Add %" adds a percentage to a number (like adding tax), and "Subtract %" subtracts a percentage (like applying a discount).

When You Will Use This

Students use it for math and statistics homework. Shoppers use it to calculate sale prices and compare discounts. Freelancers use it for commission calculations. Business owners use it for profit margins and growth percentages. It is one of the most versatile tools you will bookmark.

How to Use

Select your calculation mode from the five options at the top. Enter the numbers in the fields. Click "Calculate" — the result appears instantly in a clear, large format. You can switch modes and try different numbers any time.