Discount Calculator

Enter an original price and a discount percentage or fixed amount to instantly see the final price, discount amount, and total savings.

Original price

Discount

How to use the Discount Calculator

Enter the original price
Type the full price of the item before the discount is applied. This is the price shown on the label or listed on the product page.
Choose percentage or fixed amount
Use the % button if the discount is expressed as a percentage (e.g. '20% off'). Use $ if the discount is a fixed monetary amount (e.g. '$15 off'). You can also tap a quick-select button for common percentages.
Enter the discount value
Type the percentage or dollar amount of the discount. For 20% off, enter 20. For a $15 coupon off a $80 item, enter 15 with $ mode selected.
See your savings instantly
The calculator shows the discount amount in dollars, your savings as a percentage, and the final price — all updating live as you type.

About this Discount Calculator

Percentage discounts are one of the most common forms of pricing in retail, e-commerce, and sales promotions — and they're also one of the easiest things to miscalculate. Our free discount calculator removes the mental arithmetic so you can focus on whether the deal is actually worth it.

Understanding how discounts compound is useful for stacking promotions. If a store offers 20% off and you also have a 10% coupon, the combined saving is not 30% — it's applied sequentially. The 20% off brings a $100 item to $80, and the 10% coupon brings it to $72, which is a 28% total saving. Our calculator works with a single discount at a time; apply it twice for stacked discounts.

For retailers and shoppers alike, understanding the relationship between discount percentage and margin impact is important. A 10% discount on a product with a 25% margin eliminates nearly half of the profit. For consumers, the absolute saving in dollars is often more useful than the percentage — a 10% discount on a $5 item saves 50 cents, while 10% off a $500 item saves $50.

The calculator also works in reverse: if you know the original price and want to verify what percentage off a sale price represents, divide the saving by the original price and multiply by 100.

Frequently Asked Questions

Multiply the original price by the discount percentage as a decimal, then subtract from the original price. For example, 20% off $80: $80 × 0.20 = $16 discount, so the final price is $80 − $16 = $64.

Multiply the price by 0.80 (i.e., 100% − 20% = 80%). For example, 20% off $150 = $150 × 0.80 = $120. Alternatively, find 20% of the price ($30) and subtract it from the original ($150 − $30 = $120).

Divide the discounted price by (1 − discount rate). For example, if you paid $64 after a 20% discount: $64 ÷ 0.80 = $80 original price. Use the 'Find original price' feature in our calculator.

Multiple discounts are applied sequentially, not added together. A 20% discount followed by a 10% discount is not the same as 30% off. Example: $100 − 20% = $80, then $80 − 10% = $72. The effective combined discount is 28%, not 30%.

A discount reduces the price at the point of sale — you pay less immediately. A rebate is a partial refund paid after the purchase, usually requiring you to submit a claim. Both reduce the effective price, but a rebate means you pay full price upfront and receive money back later.