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Tools / Discount calculator

Discount calculator

Work out what you actually pay after a percentage off, and what you save. It also handles a second discount applied on top, which is the case people get wrong: 20% off then 10% off is 28% off, not 30%, because the second one applies to the already-reduced price.

Runs entirely in your browser

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About this tool

Work out what you actually pay after a discount, and how much you save. Enter the original price and the percentage off, and the tool shows the final price and the saving — the everyday “how much is 30% off this” answer, without the mental maths.

It also handles the case people most often get wrong: two discounts stacked on top of each other. 20% off followed by another 10% off is not 30% off — it is 28% off — because the second discount applies to the already-reduced price, not the original. The tool computes the true combined figure so you are not misled by a headline that adds the percentages together.

The calculation runs in your browser, so it is instant and private. Use it to check a sale price, compare offers, or see whether a “stack these coupons” deal is really as good as it sounds.

Frequently asked questions

How do I calculate a price after a percentage discount?
Enter the original price and the discount percentage; the tool subtracts that percentage and shows both the final price and the amount saved.
Why isn’t 20% off then 10% off the same as 30% off?
Because the second discount applies to the already-reduced price. 20% then 10% works out to 28% off the original, not 30%, which is exactly the error stacking calculators help avoid.
Can it handle two stacked discounts?
Yes. It applies a second percentage on top of the first and reports the true combined discount and final price.
Does it show how much I save?
Yes. Alongside the final price it shows the total saving, so you can see the value of the discount in money, not just percent.
Is it private?
Yes. The calculation runs in your browser, so the prices you enter are not transmitted.

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