20% off a $100 item
A product costs $100 and is discounted by 20%.
Calculation: $100 × 20 ÷ 100 = $20 saved; $100 − $20 = $80
Answer: You save $20 and pay $80 before tax.
Discount Calculator
Enter an original price and discount percentage to find the amount you save and the final sale price before tax.
Calculate a discount
Example: Find the sale price of a $100 item with 20% off
How to calculate a discount
Multiply the original price by the discount percentage, then divide by 100 to find the savings. Subtract the savings from the original price to find the final sale price.
Discount formulas
Discount amount = original price × discount percentage ÷ 100
Sale price = original price − discount amount
The calculator shows the price after the discount, before sales tax, shipping, coupons, rewards, or other charges.
Tip: A 20% discount means you pay 80% of the original
price. A 50% discount means you pay half the original price.
Examples
35% off a $60 item
A $60 item is on sale for 35% off.
Calculation: $60 × 35 ÷ 100 = $21 saved; $60 − $21 = $39
Answer: You save $21 and pay $39 before tax.
15% off a $249.99 item
A $249.99 item has a 15% discount.
Calculation: $249.99 × 15 ÷ 100 = $37.50 saved; $249.99 − $37.50 = $212.49
Answer: You save $37.50 and pay $212.49 before tax.
Frequently asked questions
How do I calculate 20% off?
Multiply the original price by 0.20 to find the amount saved, then subtract that amount from the original price. Equivalently, multiply the original price by 0.80 to find the sale price.
What is 25% off $80?
Twenty-five percent of $80 is $20. Subtract $20 from $80, so the sale price is $60 before tax.
Does this calculator include sales tax?
No. It calculates the discount and sale price before tax. Sales tax, shipping, and other fees depend on the purchase and location.
Can a discount be more than 100%?
A normal price discount should be between 0% and 100%. A discount above 100% would make the calculated price negative.