Calculate sale prices, savings, and discount percentages. Figure out original prices, stacked discounts, and find the best deals.
Final Price
$75
You Save
$25
25.0% off
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Enter prices and discount percentages
Visual comparison of price and savings
Common discount amounts at a glance
| Discount | You Pay | You Save |
|---|---|---|
| 10% off | $90 | $10 |
| 15% off | $85 | $15 |
| 20% off | $80 | $20 |
| 25% off | $75 | $25 |
| 30% off | $70 | $30 |
| 40% off | $60 | $40 |
| 50% off | $50 | $50 |
| 60% off | $40 | $60 |
| 70% off | $30 | $70 |
Mathematical calculations explained
Calculate Sale Price:
Sale Price = Original × (1 - Discount%/100)
Calculate Discount %:
Discount% = (Original - Sale) / Original × 100
Calculate Original Price:
Original = Sale Price / (1 - Discount%/100)
Stacked Discounts:
Final = Original × (1 - D1%) × (1 - D2%)
Multiple discounts combined
Two successive discounts equal these single discounts:
| First | + | Second | = | Effective |
|---|---|---|---|---|
| 10% | + | 10% | = | 19% |
| 20% | + | 10% | = | 28% |
| 20% | + | 20% | = | 36% |
| 25% | + | 15% | = | 36.25% |
| 30% | + | 20% | = | 44% |
| 50% | + | 50% | = | 75% |
To calculate a discounted price: Sale Price = Original Price × (1 - Discount%). For a 100 item at 30% off: 100 × (1 - 0.30) = 100 × 0.70 = 70. Savings = 100 - 70 = $30. Calculate any discount at practicalwebtools.com.
See how different discount percentages affect your savings
1 insight based on your inputs
Good discount of 25%. You're saving $25 on $100.
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To calculate a discount: Savings = Original Price × (Discount % / 100). Final Price = Original Price - Savings. For example, a 20% discount on $50: Savings = $50 × 0.20 = $10. Final price = $50 - $10 = $40.
Stacked discounts apply sequentially, not additively. A 20% + 10% discount is NOT 30% off. First apply 20% to get a new price, then apply 10% to that result. $100 with 20% then 10% off = $100 × 0.80 × 0.90 = $72 (28% effective discount).
Use this formula: Original Price = Sale Price / (1 - Discount%). If an item is $60 after 25% off: Original = $60 / (1 - 0.25) = $60 / 0.75 = $80. The original price was $80.
Discount % = ((Original - Sale) / Original) × 100. If original price is $80 and sale price is $60: Discount = (($80 - $60) / $80) × 100 = 25%. You're getting 25% off.
Not necessarily. Compare final prices, not percentages. 50% off $30 ($15) is worse than 30% off $50 ($35 → $35 vs $15). Also consider quality, need, and whether you'd buy at full price. The best discount is on something you actually need.
Final Price
$75
You Save
$25
25.0% off