Discount Calculator
Find the sale price and how much you save after one or two discounts. It runs in your browser.
Also searched as: percent off calculator · sale price calculator · percentage discount calculator
Updated November 9, 2026
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How to use it
- 1
Enter the price
The original price before any discount.
- 2
Enter the discount
Add a second discount to stack them if you like.
- 3
See the result
The sale price and the amount you save.
Questions about discount calculator
How do stacked discounts work?
The second discount is applied to the already-reduced price, not the original.
Is a 50% then 50% off the same as free?
No. The second 50% is of the halved price, so you pay a quarter of the original.
Is my information sent anywhere?
No. It is worked out on your device.
Percent off at a glance
A discount takes a percentage off the original price. The sale price is the original price times one minus the discount, so 25% off leaves 75% of the price. The table shows the sale price and the saving for common discounts on an 80.00 item.
| Discount | You pay | You save |
|---|---|---|
| 10% off | 72.00 | 8.00 |
| 15% off | 68.00 | 12.00 |
| 20% off | 64.00 | 16.00 |
| 25% off | 60.00 | 20.00 |
| 30% off | 56.00 | 24.00 |
| 40% off | 48.00 | 32.00 |
| 50% off | 40.00 | 40.00 |
Stacking two discounts
The second discount applies to the price after the first one, so two discounts do not add up. Taking 20% off and then a further 10% off a 100.00 item leaves 72.00, a total saving of 28.00, which is 28% and not 30%. Two discounts of 50% leave 25.00, a quarter of the original price, not nothing.
The order does not change the result, because multiplying the two factors gives the same answer either way.
Working backwards from the sale price
If you know the sale price and the percentage off, divide the sale price by one minus the discount written as a decimal to find the original price. A price of 60.00 after 25% off came from 60.00 divided by 0.75, which is 80.00. This tool starts from the original price, so use that division when you need to go the other way.