Discount Calculator
Find the sale price and how much you save with any percentage discount. Enter original price and discount percentage — results update instantly.
Calculate discount & sale price
Enter the original price and the discount percentage to see the final price and your saving.
How to calculate a discount
The discount formula is: Sale price = Original price × (1 − Discount% ÷ 100). The amount saved is: Saving = Original price − Sale price.
Worked example: 20% off $80
Sale price = $80 × (1 − 20 ÷ 100) = $80 × 0.80 = $64. Saving = $80 − $64 = $16.
Common discount reference table
These examples show the savings and final price for a $100 item at common discount levels:
| Discount | You save (on $100) | Sale price |
|---|---|---|
| 10% off | $10.00 | $90.00 |
| 20% off | $20.00 | $80.00 |
| 25% off | $25.00 | $75.00 |
| 30% off | $30.00 | $70.00 |
| 50% off | $50.00 | $50.00 |
Stacking discounts
If a store applies two discounts sequentially — for example 20% off then an additional 10% off — you do NOT add them to get 30%. Instead, apply each in sequence: $100 × 0.80 = $80, then $80 × 0.90 = $72. The effective combined discount is 28%, not 30%.
Frequently asked questions
Multiply the price by 0.80 (which is 1 − 0.20). For $65: $65 × 0.80 = $52. You save $13.
30% off $50 = $50 × 0.70 = $35. You save $15.
Divide the sale price by (1 − discount% ÷ 100). If you paid $56 after a 30% discount: $56 ÷ 0.70 = $80 original price.
They mean the same thing. A 25% discount and 25% off both mean the price is reduced by 25% of the original amount.
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