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Free discount percentage calculator and percent off calculator. Get final price, dollar savings, and reverse original price. Pair with the discount impact calculator for margin and break-even volume.
Last updated: May 24, 2026
Modeling profit after a promo? Discount impact calculator
Choose your calculation method
Regular price before discount
Percentage off (0-100%)
Answers: what is the sale price, how much you save in dollars, and whether the deal is good for your category.
$100.00 → $75.00 · save $25.00.
Good · Moderate savings · Above average discount — good value.
+10% off → $67.50 · $10 coupon → $65.00 · 3× bulk → $191.25.
Default: $100.00 list · 25% off · General Retail
Final price
$75.00
You save
$25.00
Discount
25%
Deal
Good
Fair savings — compare with other retailers
| Metric | Formula | Default example |
|---|---|---|
| Discount amount | Original × (Discount % ÷ 100) | $100 × 25% = $25 |
| Final price | Original × (1 − Discount % ÷ 100) | $100 × 0.75 = $75 |
| Discount % from prices | (Original − Sale) ÷ Original × 100 | ($100 − $75) ÷ $100 = 25% |
| Reverse original | Sale ÷ (1 − Discount % ÷ 100) | $75 ÷ 0.75 = $100 |
| Stacked discounts | Original × (1−D1%) × (1−D2%) | $100 × 0.80 × 0.90 = $72 |
| Effective % off | (Original − Final) ÷ Original × 100 | ($100 − $72) ÷ $100 = 28% |
| Category | Small | Good | Excellent | Example |
|---|---|---|---|---|
| General Retail | 10% | 25% | 50% | Default 25% off $100 → Good |
| Electronics | 5% | 15% | 30% | 20% off $500 TV → Good |
| Fashion | 15% | 30% | 60% | 40% end-of-season → Good |
| Home & Furniture | 10% | 20% | 40% | 30% Memorial Day → Excellent |
Discount $ = Original × (Discount % ÷ 100)Final = Original × (1 − Discount % ÷ 100)Original = Sale ÷ (1 − Discount % ÷ 100)Final price
$75.00
Savings
$25.00
Discount %
25%
Deal
Good
$75 final · $25 saved · 25% off · Good deal · +10% coupon → $65.
Final price
$140.00
Savings
$60.00
Discount %
30%
Deal
Good
30% effective · $140 final · Good for retail.
Final price
$75.00
Savings
$25.00
Discount %
25%
Deal
Good
25% discount — same math as default.
Final price
$75.00
Savings
$25.00
Discount %
25%
Deal
Good
Original $100 · verify “was” pricing.
Final price
$400.00
Savings
$100.00
Discount %
20%
Deal
Good
$400 final · save $100 · Good (≥15% band).
Final price
$72.00
Savings
$28.00
Discount %
28%
Deal
Good
$72 final · 28% total off · not additive 30%.
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