Free tools
Discount Calculator
Calculate the sale price and money saved for any discount percentage — free online discount calculator.
What is the sale price after a discount?
minus % discount
Sale price: £80.00
You save: £20.00
What discount % gets me to a target price?
Original Target
Discount needed: 25%
What was the original price before the discount?
Sale price after % off
Original price: £100.00
Discount Calculator
Three discount calculations in one tool: find the sale price after a percentage discount, work out what discount percentage reaches a target price, or reverse-calculate the original price from a sale price.
How to calculate a discounted price
Sale price = original price × (1 − discount% ÷ 100). For example, £100 with 20% off: £100 × 0.80 = £80.
How to find the original price before a discount
Original price = sale price ÷ (1 − discount% ÷ 100). If an item is £80 after 20% off: £80 ÷ 0.80 = £100.
Common uses
- Checking how much you save in a sale before buying
- Comparing prices across stores with different discount rates
- Setting a target sale price and calculating the required markdown
- Verifying a retailer's advertised "was / now" pricing
Frequently Asked Questions
How do I calculate a discounted price?
Multiply the original price by the discount percentage, then subtract that amount. For example, 25% off $80: $80 × 0.25 = $20 saved, so the sale price is $60.
How do I find the original price before a discount?
Divide the sale price by (1 minus the discount as a decimal). For example, if an item costs $60 after a 25% discount: $60 ÷ 0.75 = $80 original price.
What is the difference between the discount and the sale price?
The discount is the amount subtracted from the original price — expressed as a percentage or a fixed sum. The sale price is the final amount you actually pay after the discount is applied.
How do I calculate what discount percentage reaches a target price?
Subtract the target price from the original price, divide by the original price, then multiply by 100. For example, going from $100 to $75: ($100 − $75) ÷ $100 × 100 = 25% discount.
How do stacked discounts work?
Stacked discounts are applied sequentially, not added together. A 20% discount followed by 10% off the reduced price is not the same as 30% off. On $100: 20% off gives $80, then 10% off gives $72 — a combined saving of 28%, not 30%.
What is the difference between "percentage off" and "percentage of price"?
"30% off" means you pay 70% of the original price. "30% of the price" means you pay 30%. When shopping, "% off" always refers to the deduction, not the amount you pay.