Discount Calculator
Enter a price and a discount percentage to find the sale price and the amount you save.
Enter the discount % in the first field and the original price in the second. The result is the discount amount. Subtract from the original price to get the sale price.
How to calculate a discount
A discount is a reduction from the original price, expressed as a percentage. To find the discount amount, multiply the original price by the discount percentage and divide by 100. Subtract the discount amount from the original price to find the sale price.
Discount formula
Sale price = Original price − Discount amount
Worked examples
| Original price | Discount | You save | Sale price |
|---|---|---|---|
| $100 | 10% | $10 | $90 |
| $250 | 20% | $50 | $200 |
| $79.99 | 15% | $12 | $67.99 |
| $1,200 | 25% | $300 | $900 |
| £60 | 30% | £18 | £42 |
| €500 | 5% | €25 | €475 |
Common discount scenarios
- Black Friday / sales — quickly work out how much you actually save on a discounted item.
- Coupon codes — calculate the final price after applying a percentage-off voucher.
- Wholesale pricing — find the trade price when a supplier offers a percentage off the retail price.
- VAT and tax removal — divide by (1 + tax rate) to find the pre-tax price from a tax-inclusive price.
- Tipping — calculate a tip as a percentage of your bill.
How to find the original price from a sale price
If you know the sale price and the discount percentage, divide the sale price by (1 − discount/100) to recover the original price.
Example: A jacket costs $68 after a 15% discount. Original price = 68 ÷ (1 − 0.15) = 68 ÷ 0.85 = $80.
Also on this site
- Percentage Calculator — all three percentage tools in one place
- Percentage Change Calculator — measure increase or decrease between two values
- Help & Examples — step-by-step guide
FAQ
How do I calculate 20% off a price?
Multiply the price by 0.20 to find the discount amount, then subtract from the original price. Or enter 20 and the price in the calculator above. Example: 20% off $85 = $85 × 0.20 = $17 off, so you pay $68.
How do I find the sale price after a discount?
Multiply the original price by (1 − discount/100). For a 30% discount on $150: $150 × 0.70 = $105.
What is the difference between a discount and a markdown?
A discount is a temporary reduction offered to a buyer. A markdown is a permanent reduction in the listed price. Mathematically both are calculated the same way.
Can I calculate multiple discounts together?
Yes, but they do not simply add up. A 20% discount followed by a further 10% discount is not 30% off. Apply them sequentially: 20% off $100 = $80, then 10% off $80 = $72 (a combined 28% reduction).
How do I calculate the discount percentage from two prices?
Use the Percentage Change Calculator: enter the original price as the "from" value and the sale price as the "to" value. The result is the percentage decrease (discount).