Discount Calculator
Calculate the final sale price and amount saved after applying a percentage discount.
About the Discount Calculator
A percentage discount is easy to state but easy to miscalculate under pressure at checkout — this calculator removes the guesswork, instantly showing the final sale price and exactly how much you save on any original price and discount percentage.
How It Works
The calculator multiplies the original price by the discount percentage to find the amount saved, then subtracts that from the original price to get the final price you actually pay.
Amount Saved = Original Price × Discount %; Final Price = Original Price − Amount Saved.
Worked example
Scenario: A $75 item with a 25% discount.
- Savings: $75 × 25% = $18.75.
- Final price: $75 − $18.75 = $56.25.
Result: You pay $56.25 and save $18.75.
Check the final price, not just the discount
A large percentage discount can still leave a higher final price than a competing offer. For stacked discounts, applying two percentages sequentially is not the same as simply adding them together.
Tips and common mistakes
- Stacked discounts multiply, not add: 25% off, then an extra 10% off, is 32.5% off in total, not 35%.
- Apply sales tax after the discount to get the amount you'll pay at checkout.
- To compare with a 'buy one, get one half off' deal, work out the effective discount per item (25%).
Assumptions & Limitations
- Assumes a single discount percentage applied to the full original price.
- Discount is applied before any sales tax, which is calculated separately in most jurisdictions.
- Does not stack multiple discounts automatically — apply them one at a time in sequence for stacked promotions.
- Does not account for store-specific rules like maximum discount caps on clearance items.