Calculate sale price, savings amount, or original price from any discount. Perfect for shopping, deals, and coupons.
| Original | 10% Off | 20% Off | 25% Off | 50% Off |
|---|---|---|---|---|
| $20 | $18 | $16 | $15 | $10 |
| $50 | $45 | $40 | $37.50 | $25 |
| $100 | $90 | $80 | $75 | $50 |
| $200 | $180 | $160 | $150 | $100 |
| $500 | $450 | $400 | $375 | $250 |
| $1,000 | $900 | $800 | $750 | $500 |
Two successive discounts are NOT additive. A 20% off followed by another 10% off equals 28% total, not 30%. Always calculate compound discounts: Final = Price × (1 – d1) × (1 – d2).
Sale Price = Original Price × (1 - Discount% / 100)
Example: $100 item, 30% off → $100 × 0.70 = $70
Discount % = ((Original - Sale) / Original) × 100
Example: $100 → $75 → ((100-75)/100) × 100 = 25%
Original Price = Sale Price / (1 - Discount% / 100)
Example: Sale $60 after 25% off → $60 / 0.75 = $80 original
Find the sale price and savings for common discount rates.
An item priced $120 with a 30% discount.
Result: Save $36 → pay $84.00.
A $250 item on a 40%-off sale.
Result: Save $100 → pay $150.00.
A $200 item with 25% off, then an additional 10% at checkout.
Result: $200 → $150 → $135.00 (not 35% off — discounts stack multiplicatively).
Multiply the price by the discount percentage, then subtract from the original.
Apply them one after another — 25% then 10% off equals 32.5% off, not 35%.
Discounts apply first; sales tax is calculated on the reduced price.