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Percentage Calculator

Calculate common percentage questions for shopping, business, bookkeeping, schoolwork, and quick everyday math.

What is X% of Y?

X is what percent of Y?

Percent change

Add or subtract a percent

Enter values to calculate.

Choose a calculator mode, enter your numbers, and press Calculate.

This calculator runs locally in your browser. It is intended for quick estimates and everyday calculations.

Percentage Calculator FAQ

How do I calculate a discount?

Use the add/subtract mode, enter the original price, enter the discount percent, and choose subtract percent.

How do I calculate percent change?

Use the percent change mode. Enter the starting value and new value to see whether the value increased or decreased.

Can I use decimals?

Yes. The calculator accepts decimal values such as 12.5, 0.75, or 199.99.