Discount Calculator
Find the sale price and your savings from a discount, stack two offers, or work out the percent off from two prices.
Enter the price and discount to see what you pay.
How to use the discount calculator
In single mode, enter the original price and the percent off to see the final price and how much you save. The savings line shows both the dollar amount and the percentage so you can compare offers at a glance.
Switch to stacked mode to apply two discounts in a row, or to find mode to work backward from an original price and a sale price to the percent off. Each mode swaps in only the fields it needs.
How to calculate a discount
A discount is a percentage taken off the original price. Multiply the price by the discount written as a decimal to get the savings, then subtract that from the price. A $80 jacket at 25% off saves $20, so the sale price is $60.
The bigger the original price, the more a given percentage saves you in dollars. That is why a small percent off a large purchase can beat a large percent off a cheap one.
Why stacked discounts do not simply add
A common mistake is adding two discounts together. A 20% coupon plus an extra 10% is not 30% off. The second discount applies to the price that already had the first one taken off, not the original.
Start with $100, take 20% to reach $80, then take 10% of that $80 to reach $72. The effective discount is 28%, not 30%. Stacked mode does this in order so the final price is always correct.
Finding the percent off from two prices
When a tag shows an original and a sale price but not the percentage, you can work it out. Subtract the sale price from the original to get the savings, then divide by the original and multiply by 100.
An item marked down from $60 to $45 saves $15, which is 25% off. Find mode does this for you and is useful for checking whether an advertised discount matches the actual price cut.
Frequently asked questions
- How do I calculate the sale price after a discount?
- Multiply the original price by the discount as a decimal to get the savings, then subtract from the price. At 25% off, an $80 item saves $20 and costs $60. Single mode does this instantly.
- Is 20% off then 10% off the same as 30% off?
- No. The second discount applies to the already-reduced price. From $100, 20% gives $80, then 10% of $80 gives $72. That is a 28% effective discount, not 30%. Stacked mode handles this correctly.
- How do I find the percentage off from two prices?
- Subtract the sale price from the original, divide by the original, and multiply by 100. A drop from $60 to $45 is $15 saved, or 25% off. Find mode calculates this for you.
- Does a higher percentage always save more money?
- Not always. A percentage saves more in dollars on a pricier item, so 10% off a $500 item beats 50% off a $50 item. Compare the dollar savings, not just the percentage, when items differ in price.
- Can I use this for tax-inclusive prices?
- This tool works on the price you enter. If you want the discount on a pre-tax amount, enter that figure. For adding or removing sales tax separately, use a sales tax calculator.