Discount Calculator
A discount reduces a price by a percentage or a fixed amount. Enter any two of the original price, discount percentage, discount amount and final price, and the calculator works out the others.
Discount Calculator
Calculate discounts, sale prices, and savings
Calculate the discount amount when you know the original price and discount percentage. Alternatively, calculate the original price by entering the final price and discount percentage. Fill in any 2 fields to solve for the remaining 2.
Formulas
- Discount amount
Amount = Original × (Discount % ÷ 100) - Final price
Final = Original − Amount - Discount percentage
Discount % = (Original − Final) ÷ Original × 100
Watch out: Successive discounts do not add together. 20% off followed by a further 10% off is 28% off in total, not 30%.
Discount table for a price of 100.00
Savings and final price for common discount rates. Scale the figures for any other price.
| Discount | You save | Final price |
|---|---|---|
| 5% off | 5.00 | 95.00 |
| 10% off | 10.00 | 90.00 |
| 15% off | 15.00 | 85.00 |
| 20% off | 20.00 | 80.00 |
| 25% off | 25.00 | 75.00 |
| 30% off | 30.00 | 70.00 |
| 40% off | 40.00 | 60.00 |
| 50% off | 50.00 | 50.00 |
| 60% off | 60.00 | 40.00 |
| 70% off | 70.00 | 30.00 |
Stacked discounts: 20% off and then a further 10% off leaves 72.00 — a total discount of 28%, not 30%.
When you would use it
Checking sale prices, comparing offers, and pricing promotions.
Frequently asked questions
How do I calculate a discounted price?
Multiply the original price by (1 − discount ÷ 100). A 25% discount on 80.00 gives 80 × 0.75 = 60.00.
How do I work out the discount percentage from two prices?
Subtract the sale price from the original, divide by the original, and multiply by 100. A price cut from 50.00 to 40.00 is a 20% discount.
Do two discounts add together?
No. Successive discounts multiply. 20% off followed by 10% off is 0.8 × 0.9 = 0.72 of the original price, which is 28% off in total.
How do I find the original price before a discount?
Divide the sale price by (1 − discount ÷ 100). If an item costs 60.00 after 25% off, the original price was 60 ÷ 0.75 = 80.00.