Discount calculator
Find the sale price, the percent off or the original price in seconds.
About this tool
Quick answer: A discount calculator works out what you pay after a percentage is taken off, how big a discount really is, or what the price was before the sale. Enter two numbers and choose what you want to find. Two discounts in a row are combined correctly.
How to use it
- Choose what you want to find: the price after a discount, the percent off, the original price, or two discounts in a row.
- Type the numbers you know. The answer and the working appear as you type.
- Looking at a real deal? Use the deal checker to see if the price is as good as it looks.
Example: 25% off an $80 item
| Original price | $80.00 |
|---|---|
| Discount | 25% |
| You save | $20.00 |
| You pay | $60.00 |
Formula: 80 × (1 − 0.25) = 60.
Good to know
Two discounts are not added
A 20% discount followed by another 20% takes off 36%, not 40%, because the second 20% applies to the already reduced price.
Finding the original price
Divide the sale price by one minus the discount. If an item costs $45 after 40% off, it used to cost 45 ÷ 0.60 = $75.
Tax and shipping
Sales tax is normally added after the discount and depends on where you live, so it isn't included. Check delivery costs separately.
Frequently asked questions
How do I calculate percent off?
Subtract the sale price from the original price, divide the result by the original price, then multiply by 100. For example, (100 − 72) ÷ 100 × 100 = 28% off.
Do two discounts add up?
No. Each discount applies to the price left after the previous one, so two 20% discounts equal 36% off in total.
How do I find the original price from the sale price?
Divide the sale price by one minus the discount as a decimal. If a price is $45 after 40% off, divide 45 by 0.60 to get $75.
Does this calculator store what I type?
No. The maths runs in your browser and nothing is sent or saved.
Related reading
More tools
This tool uses only the numbers you type. It does not use or show Amazon product data, and nothing you enter is stored or sent.