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Calculate discounts, sale prices, and savings instantly. Support for multiple stacked discounts.
Enter price and discount to calculate
Example: 25% off $80 = $80 × 0.25 = $20 discount → Final price = $60
Example: $100 with 20% off then 10% off = $100 × 0.80 = $80, then $80 × 0.90 = $72
Note: 20% + 10% ≠ 30% when stacked!
Example: 30% off $50 = $50 × (1 - 0.30) = $50 × 0.70 = $35
| Original Price | Discount | You Save | Final Price |
|---|---|---|---|
| $100 | 10% | $10 | $90 |
| $100 | 20% | $20 | $80 |
| $100 | 25% | $25 | $75 |
| $100 | 30% | $30 | $70 |
| $100 | 40% | $40 | $60 |
| $100 | 50% | $50 | $50 |
| $200 | 15% | $30 | $170 |
| $500 | 35% | $175 | $325 |
To calculate a discount, multiply the original price by the discount percentage (as a decimal). For example, 20% off $50 = $50 × 0.20 = $10 discount. Subtract this from the original price to get $40.
Stacked discounts apply sequentially, not additively. If you have 20% off then 10% off on $100, first apply 20% to get $80, then apply 10% to $80 to get $72 (not 30% off which would be $70).
Final Price = Original Price × (1 - Discount% / 100). For example, 25% off $80 = $80 × (1 - 0.25) = $80 × 0.75 = $60.
If you know the final price and discount percentage: Original Price = Final Price / (1 - Discount% / 100). For example, if final price is $60 after 25% off: $60 / 0.75 = $80.
A discount reduces the price (selling for less than original), while markup increases the price (selling for more than cost). Discounts are based on the original/list price, while markup is based on the cost.
Discount% = (Savings / Original Price) × 100. For example, if you save $20 on an $80 item: ($20 / $80) × 100 = 25% discount.
No. "Buy one get one 50% off" means you get 25% off total when buying two items (you pay 100% + 50% = 150% for 2 items = 75% per item on average). This is less than 30% off each item.
Always apply the discount first, then calculate sales tax on the discounted price. For example: $100 with 20% off and 8% tax = $100 × 0.80 = $80, then $80 × 1.08 = $86.40.