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Discount Calculator
Free discount calculator. Work out final prices after percentage discounts, fixed-amount discounts, or stacked double discounts. Reverse-calculate what discount percentage was applied. Supports any currency.
Stacked discounts apply sequentially, not additively: 20% off then 10% off = 28% total, not 30%.
Reverse mode finds what percentage discount was applied given the original and final price.
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Frequently Asked Questions
How do I calculate a percentage discount?
Multiply the original price by the discount percentage divided by 100. For example, 25% off £80 = £80 × 0.25 = £20 discount, giving a final price of £60.
What is a stacked discount?
A stacked discount applies two discounts sequentially. For example, 20% off then 10% off does NOT equal 30% off, it equals 28% off, because the second discount applies to the already-reduced price.
How do I find the original price from a discounted price?
Use the Reverse mode. Enter the original price and the final price paid, and the calculator will tell you the exact discount percentage that was applied.
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