Percent Off Calculator

Instantly calculate any discount. Enter the original price and the percent off to see the dollar savings and final sale price — no signup, no ads, works on every device.

FAQ

How do I calculate a percent off?

Multiply the original price by the discount percent (as a decimal), then subtract from the price. Example: 20% off $80 → 80 × 0.20 = $16 discount → $80 − $16 = $64 sale price.

Is HowMuchOff free?

Yes — completely free, no signup, no email required. The calculator runs entirely in your browser.