Discount Calculator
Find out what you'll really pay. Enter the original price and the discount to see the final price and how much you save, including an extra discount on top if there is one.
Final price
60.00
Check the highlighted fields to see your result.
- You save
- 20.00
- Total discount
- 25.00%
Results are estimates for information only and do not constitute financial, medical, or legal advice.
How a discount works
A percentage discount takes that share off the price: 25% off means you pay 75% of the original price. When a shop offers an extra discount, it's applied to the price that's already reduced, so the total discount is a little less than the sum of the two.
The formulas
Final price = price × (1 − discount ÷ 100) × (1 − extra ÷ 100)
You save = price − final price
Worked example
A jacket costs 100 with 20% off, and there's an extra 10% off at checkout.
- First discount: 100 × (1 − 0.20) = 80.00
- Extra discount: 80.00 × (1 − 0.10) = 72.00
- You save: 100 − 72 = 28.00, a total discount of 28%
Frequently asked questions
How do I work out the discount percentage from two prices?
Subtract the sale price from the original price, divide by the original price, and multiply by 100. If something went from 80 to 60: (80 − 60) ÷ 80 × 100 = 25% off.
Is 20% off plus an extra 10% the same as 30% off?
No. The extra discount applies to the price that's already reduced, so together they're worth 28%, not 30%. On a price of 100: 20% off gives 80, and 10% off 80 gives 72.
Does it matter which discount is applied first?
No. Applying 20% and then 10%, or 10% and then 20%, gives the same final price.
Is sales tax included?
The calculator applies the discount to the price you enter. If sales tax is added at checkout, it is usually calculated on the discounted price.