Discount Calculator
Calculate the sale price after a discount, find the original price, or work out what percentage was taken off.
When to use a discount calculator
Discounts appear everywhere — from seasonal sales and coupons to wholesale pricing and invoice negotiations. Here are the most common scenarios.
Find the final price on sale items before you get to the register — avoid surprises at checkout.
Quickly calculate savings from promo codes and compare deals across different stores.
Calculate wholesale discounts, bulk pricing, and trade rates for B2B transactions.
Work out the final price after negotiating a percentage off the asking price.
Compare annual vs monthly plans and calculate savings from introductory offers.
Calculate the actual price on software, travel, and products with student pricing.
Frequently asked questions
Everything you need to know about calculating discounts, sale prices, and savings.
How do you calculate a discount?
Multiply the original price by the discount percentage divided by 100: Discount = Price × (Discount% ÷ 100). Then subtract from the original price to get the sale price.
Example: 20% off $80: $80 × 0.20 = $16 off. Sale price = $80 − $16 = $64.
How do you find the original price before a discount?
Divide the sale price by (1 minus the discount rate): Original = Sale price ÷ (1 − Discount%/100).
Example: Item costs $64 after 20% off. $64 ÷ 0.80 = $80 original price.
How do you calculate the discount percentage?
Subtract the sale price from the original, divide by the original, multiply by 100: Discount% = ((Original − Sale) ÷ Original) × 100.
Example: $80 → $64. ((80 − 64) ÷ 80) × 100 = 20% off.
How do stacked or double discounts work?
Stacked discounts are applied sequentially, not added together. A 20% discount followed by a 10% discount is not 30% off.
Example: $100 item with 20% off then 10% off. Step 1: $100 × 0.80 = $80. Step 2: $80 × 0.90 = $72. Total saving = $28 (28%), not 30%.
What is the difference between a discount and a rebate?
A discount reduces the price at the point of sale — you pay less upfront. A rebate is a partial refund after purchase — you pay full price and receive money back later, often by mail or as a statement credit. Rebates are common in electronics and automotive purchases.
About this calculator
This discount calculator has three modes: find the sale price from an original price and discount percentage, reverse-calculate the original price from a sale price, or determine what discount percentage was applied. All calculations happen instantly in your browser.
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