Percent Off Calculator
Find your discount amount and final price for any percent off sale — including how to calculate stacked discounts correctly.
Your savings will appear here
Enter the original price and percent off, then click calculate to see your final price.
Quick Answer
A percent off calculator finds your savings by multiplying the original price by the discount percentage, then subtracting that from the original price to get your final price.
How It Works: Formula & Variables
Discount Amount = Original Price × (Percent Off ÷ 100); Final Price = Original Price − Discount Amount
- Original Price
- The price of the item before any discount is applied.
- Percent Off
- The percentage of the original price taken off as a discount.
Worked Examples
Example 1: Single discount
A $120 jacket is 25% off. Discount = $120 × 0.25 = $30, so the final price is $90.
Example 2: Stacked discounts
An $84.99 item is 40% off, plus an extra 10% off at checkout. First discount: $84.99 × 0.40 = $33.996, dropping the price to $50.99. Second discount: $50.99 × 0.10 = $5.10, for a final price of $45.89. Stacked discounts apply sequentially, not added together.
Key Concepts
Stacked discounts compound: A second discount is applied to the already-discounted price, not the original price, so two discounts never simply add together.
"Percent off" vs. "percent of": These two phrases are easy to confuse — percent off is what you subtract, while percent of is what you'd pay.
Check sale math against the receipt: Retailers sometimes round differently at checkout, so it's worth confirming the final price matches your calculation.
Common Mistakes
Adding discount percentages together: Treating 40% off plus 10% off as 50% off overstates your savings — the discounts apply sequentially instead.
Confusing final price with discount amount: The amount you save is not the same as the price you'll actually pay.
Forgetting sales tax timing: In most jurisdictions, sales tax is calculated on the discounted price, not the original price.
Frequently Asked Questions
It means you pay 75% of the original price — the discount amount is 25% of the price, subtracted from the total.
Apply the first discount to get a new price, then apply the second discount to that new price — don't add the two percentages together, since that overstates your savings.
In most cases, the discount is applied first to get the sale price, and sales tax is then calculated on that discounted amount.
Divide the sale price by (1 − discount as a decimal). For example, a $75 sale price at 25% off means $75 ÷ 0.75 = $100 original price.