Discount Calculator
Enter a price and a percent off (or dollar amount off) to get the sale price instantly. Free, no account, everything runs in your browser.
Sale price
$80
You save $20 (20% off)
Exact: $80.00
Double discount calculator
Two stacked coupons? Stack them correctly — 20% + 20% is 36% off, not 40%.
Triple discount calculator
Three stacked discounts compounded step by step, with the equivalent single discount.
Sale price table
Lookup tables for 10%–90% off common price points — no math needed.
Frequently asked questions
How do I calculate a discount?
Multiply the original price by (1 − discount). For example, 25% off $80 is 80 × 0.75 = $60. This calculator does it for you — enter the price and the percent off.
How do stacked discounts work?
Stacked discounts multiply — each discount applies to the already-reduced price. A 20% + 20% stack equals 36% off, not 40%. See the double discount calculator for a worked example.
Does this calculator store my data?
No. All calculations run in your browser. There is no account and nothing is uploaded.