Utility

Percentage Calculator

Free percentage calculator. Find what percentage X is of Y, calculate percentage change, and work out X% of any number instantly.

✓ Free to use ✓ Instant results ✓ Mobile friendly ✓ No sign-up needed

① What is X% of Y?

X (percent)

Y (number)

= 30

② X is what % of Y?

= 15%

③ % Change from X to Y

From (X)

To (Y)

= +25%

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How to Calculate Percentages

Percentages are used everywhere — from calculating discounts and tax to understanding statistics and pay rises. Our three-in-one percentage calculator covers the most common scenarios.

Common Percentage Formulas

X% of Y: Result = (X ÷ 100) × Y
X is what % of Y: Percentage = (X ÷ Y) × 100
% Change: Change = ((New − Old) ÷ Old) × 100

Frequently Asked Questions

How do I calculate a 20% discount?+

Enter X=20, Y=original price in calculator ①. The result is the discount amount. Subtract from the original price to get the sale price.

What is percentage change?+

Percentage change measures how much a value has increased or decreased relative to its original value. A positive result is an increase; a negative result is a decrease.

How do I calculate VAT?+

In the UK, VAT is 20%. To find VAT on a price: use calculator ①, enter X=20, Y=net price. To find the VAT-inclusive price, multiply by 1.20.

Percentage Calculator

How to Calculate Percentages

Common Percentage Formulas

Frequently Asked Questions

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