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Discount calculator

Sale price and savings after a percentage off.

About this calculator

Enter the original price and the percentage off to see what you pay and what you save.

For two discounts in a row, run the sale price through again. A 20% discount followed by 10% off is 28% off in total, not 30%.

How it works

The saving is the price times the discount. Subtract that from the original price.

Worked example

  • Original price: $120
  • Discount: 25%

Sale price: $90.00

The story behind it

Percent-off sales are easy to read and easy to misjudge. Two discounts in a row feel like they should add up, yet 20% off followed by 10% off is 28% off, not 30%. This calculator is for that moment in a shop or at an online checkout: enter the price and the percentage, and see what you'd actually pay and save.

Why you can trust this calculator

  • It runs in your browser. Nothing you type into it is sent anywhere.
  • The method is explained on this page, so you can check it yourself.
  • Free to use, with no sign-up.
  • Results are estimates, not financial advice.
  • Spotted a mistake? Tell us and we'll look into it.
Prof. Alexandre Laurent, founder of CalculStore
Built byProf. Alexandre Laurent

After 15 years as a mathematics educator, I built CalculStore to give students, teachers, professionals and anyone working with numbers simple, reliable tools.

Meet the founder