Select Mode
$
%
Results
You Save
$0.00
0% off
Original
$120.00
→
Sale Price
$90.00
Discount Amount
$0
Sale Price
$0
Tax Amount
$0
Total After Tax
$0
How to Calculate a Discount
Also searched as: percent off calculator | discount calculator free | sale price calculator | how much is 20 percent off Optimized for US users with American units and terminology.
To find the sale price: multiply the original price by the discount percentage, then subtract from the original. For a $120 item with 25% off: $120 × 0.25 = $30 saved, so you pay $90. Alternatively: Sale Price = Original × (1 − Discount%).
Stacked Discounts: Why Order Matters
Many people think a 20% + 10% discount equals 30% off. It doesn't — it equals 28% off. This is because the second discount applies to the already-reduced price. On a $200 item: after 20% off you have $160, then 10% off $160 = $16, giving $144 final. That's a 28% total discount, not 30%.
Use the Percent Off Calculator above — enter your values and get instant results. This free online tool calculates how to calculate percent off without any download or signup required. Results update in real time as you type.
Use the Percent Off Calculator above — enter your values and get instant results. This free online tool calculates 20 percent off calculator without any download or signup required. Results update in real time as you type.
BOGO (Buy One Get One Free) is effectively 50% off per unit when you buy 2. Buy 2 Get 1 Free is 33.3% off per unit when you buy 3. The effective discount per unit decreases as the deal requires more units.
Original Price = Sale Price ÷ (1 − Discount%). Example: $90 sale price with 25% off: $90 ÷ 0.75 = $120 original. This is the reverse calculation mode on this calculator.