Percentage Calculators

Free Percentage Calculators

Calculate percentages instantly with our free online tools. Find the percentage difference between two numbers, compute shopping discounts, calculate sales tax, determine retail markup, and track percentage growth. Also includes percentage error, percentage contribution, and bill total & tip calculator.

How do I calculate percentage difference?

Use our percentage difference calculator. Enter two numbers — the calculator finds the absolute difference divided by the average, expressed as a percentage.

How do I calculate a discount?

Our discount calculator shows exactly how much you save. Enter the original price and discount percentage to see the final price instantly.

How do I calculate sales tax?

Multiply the purchase price by the tax rate. Our sales tax calculator does this instantly. Select your state to apply the correct local tax rate automatically.

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