About this calculator
The Percent Off Calculator works out the final price of an item after a discount, and how much money you save, based on the original price and the percentage off.
How do you calculate percent off?
To find the discounted price, multiply the original price by the discount percentage to get the savings amount, then subtract that from the original price: Final Price = Original Price − (Original Price × Percent Off ÷ 100). For example, a $80 item at 25% off saves you $20, bringing the final price to $60.
What about sales tax?
If sales tax applies, it's typically calculated on the discounted price, not the original price — so the discount is applied first, and tax is added afterward. This calculator lets you factor in tax so you can see the true final amount you'll pay, not just the pre-tax discounted price.
Why use a percent off calculator?
Mental math with percentages is easy to get wrong, especially when comparing multiple discounts or stacking a discount with tax. A quick calculation helps you compare deals accurately — for instance, working out whether "30% off" or "buy one get one 50% off" actually saves you more.