Percentage Calculator

Solve common percentage problems instantly. Type any number and watch the result update.

What is X% of Y?
What is % of ? =
X is what percent of Y?
is what % of ? =
X is Y% of what?
is % of what? =
Percentage change (increase/decrease)
From to : =
Tip calculator
Bill , tip %, split ways: =
Discount calculator
Original price , discount %: =
Tax calculator
Subtotal , tax %: =
About this tool

Common Percentage Formulas

X% of Y = (X/100) × Y. X is what % of Y = (X/Y) × 100. Percentage change = ((New − Old) / Old) × 100. Used in everything from tips and taxes to test scores and stock returns.

FAQ

Frequently Asked Questions

What percentage calculations are supported?

X% of Y, what percentage X is of Y, percentage increase or decrease between two numbers, plus quick tip, discount, and tax calculations.

How is percentage increase/decrease calculated?

As ((new value − old value) / old value) × 100 — the tool computes this instantly from the two numbers you enter.

Can I calculate a discount price directly?

Yes — enter the original price and discount percentage to see the final price and amount saved.

Related Tools

More Calculators

Age CalculatorBMI CalculatorDate DifferenceTime Zone ConverterLoan / EMI CalculatorUnit Converter

Want more detail? Read How to Use Percentage Calculator: Practical Guide and Best Practices.