Percentage Calculator

Calculate discounts, VAT, tips, margin, percentage change, and the percentage of a number instantly.

Percentage of a number

Result
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Choose a calculation and enter your numbers.
Calculation
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Free online percentage calculator

Use this percentage calculator to work out discounts, VAT, tips, price changes, percentage difference and profit margin. Each result includes the formula, so you can see exactly how the answer was calculated.

  • Find a percentage of any number.
  • Calculate discounts, original prices and VAT.
  • Compare two numbers with percentage change or percentage difference.
  • Work out tips, profit and margin.

Common percentage questions

How do you calculate a percentage? Multiply the number by the percentage and divide by 100.

How do you calculate percentage change? Subtract the old value from the new value, divide by the old value, then multiply by 100.

Does the calculator show the formula? Yes, every result includes the calculation used.