Calcwise / Money and tax / Discount calculator
Discount calculator
Enter the original price and the discount to see the final price. Add a second discount if the shop stacks them.
Calculated in your browser. Nothing you enter is sent or stored.
About this tool: Discount calculator
A discount of 25% takes a quarter off the price. When a shop adds a second discount, such as an extra 10% at the till, it is taken from the already reduced price, so the two do not add up to 35%.
The calculator shows the final price, the money you save and the real total discount, so you can compare offers like 30% off against 25% plus 10%.
Formula
Final price = price × (1 − discount1 ÷ 100) × (1 − discount2 ÷ 100). Total discount = (1 − (1 − d1 ÷ 100) × (1 − d2 ÷ 100)) × 100.
Worked example
A 200 item with 25% off costs 150, so you save 50. Add an extra 10%: 150 × 0.90 = 135, you save 65 and the total discount is 32.5%, not 35%.
Sources and data
- Formulas and data last reviewed
- Accuracy
- The result is plain maths: with valid input it is exact, and we only round to cents.
Frequently asked questions
Do two discounts add up?
No. The second discount applies to the price after the first, so 25% and 10% give 32.5%, not 35%.
How do I find the original price from the sale price?
Divide the sale price by 1 minus the discount. A price of 150 after 25% off was 150 ÷ 0.75 = 200.
Does the result include VAT?
It works on the number you enter. If your price includes VAT the result does as well.