Discount Calculator

Calculate the final sale price and the amount you save.

$
Input value used by the Discount Calculator.
%
Input value used by the Discount Calculator.

Calculation results

Price after discount 80
Rounded80.00
Scientific notation8E1
Price after discount $80.00
You save $20.00

How to calculate a discount

Multiply the original price by the discount percentage and divide by 100. Subtract the saving from the original price to get the final price.

Discount formula

Final price = Original price - Discount amount

Discount amount = Original price × Discount percentage ÷ 100

Discount calculation example

A $100 item with a 20% discount has a final price of $80, so you save $20.

Discount calculation tips

  • ✓ Apply the discount before adding sales tax unless local rules say otherwise.
  • ✓ Use the original listed price, not a previously discounted price, when comparing offers.
  • ✓ Check whether a coupon can be combined with an existing sale.

Common discount calculations

Quick examples based on an original price of $100.00.

Discount Original price You save Final price
5% $100.00 $5.00 $95.00
10% $100.00 $10.00 $90.00
20% $100.00 $20.00 $80.00
25% $100.00 $25.00 $75.00
50% $100.00 $50.00 $50.00
75% $100.00 $75.00 $25.00
Editorial transparency

About this calculator

Reviewed
Reviewed byInfolity Editorial Team
PublishedAugust 18, 2026
Last updatedAugust 18, 2026

We review calculator logic, labels, examples, and supporting information before publication. Results should still be checked against an appropriate professional or authoritative source when the decision is important.

Common questions

Frequently asked questions

Quick answers to the questions people most often ask about this calculator.