Percentage Off Calculator

How it works

Discount = original price × percent off ÷ 100. Final price = original price − discount. To check, divide the final price by the original price; the result should equal 1 minus the discount fraction.

Frequently asked

How do I calculate 20% off?

Multiply the price by 0.20 to get the discount, then subtract it from the original price. Or multiply by 0.80 to go straight to the final price.

What does "20% off" actually mean?

20% off means the seller is reducing the price by 20% of the original. A $100 item becomes $80.

How do I stack multiple percentage discounts?

Apply them one at a time. A 20% discount followed by an additional 10% is not 30% off — it is 28% off (0.80 × 0.90 = 0.72, so you pay 72%).