Discount Calculator
Find the final price after any percentage or fixed discount instantly. Also calculate what discount percentage you are getting and original price from sale price.
What Is a Discount Calculator?
A discount calculator quickly computes the sale price, savings amount, effective discount percentage or original pre-discount price. Whether you are shopping a sale and want to know the final price, checking if a "sale" price actually represents the advertised discount, or working backwards from a sale price to find the original — this tool handles all four scenarios instantly.
Discount Formulas
| Calculation | Formula | Example |
|---|---|---|
| Sale price | Original × (1 − discount% ÷ 100) | $100 × 0.75 = $75 |
| Savings amount | Original − Sale price | $100 − $75 = $25 |
| Discount % | ((Original − Sale) ÷ Original) × 100 | ($100 − $75) ÷ $100 = 25% |
| Original price | Sale price ÷ (1 − discount% ÷ 100) | $75 ÷ 0.75 = $100 |
Quick Reference
| Discount | You pay | You save |
|---|---|---|
| 10% off $100 | $90.00 | $10.00 |
| 25% off $80 | $60.00 | $20.00 |
| 50% off $199 | $99.50 | $99.50 |
| 30% off $250 | $175.00 | $75.00 |
| 15% off $45 | $38.25 | $6.75 |
How to Spot a Misleading Sale
Retailers sometimes inflate the "original" price to make a discount look larger than it is. Use the Find discount % mode: enter the price you have seen advertised as the original and the current sale price. If the percentage comes out much lower than the headline claims, or if the "original" price was only listed for a day before the sale, the discount is likely inflated. The same mode is useful when comparing two competing sale prices to find which deal actually saves you more in absolute terms.
Stacking Discounts and Coupon Codes
Two sequential discounts do not simply add together. A 20% off sale followed by a further 10% coupon gives a combined saving of 28%, not 30% — because the second discount applies to the already-reduced price. To calculate stacked discounts: first apply discount 1 to the original price to get an intermediate price, then apply discount 2 to that intermediate price. This tool's Decrease by % mode lets you run each step in sequence and see the exact final amount.