Discount Calculator

Multiply the original price by the discount percentage and divide by 100 to get the discount amount. Then subtract from the original price. Example: 20% off $100 = $100 × 20 ÷ 100 = $20 discount, so you pay $80. Or simply multiply by (1 − discount/100): $100 × 0.80 = $80.

Divide the sale price by (1 − discount/100). Example: you paid $68 after a 20% discount. Original = $68 ÷ 0.80 = $85. This works because the sale price is 80% of the original (100% − 20% = 80%).

Not necessarily. A 50% discount on an overpriced item might still be more expensive than a competitor's regular price. Always compare the final price across stores, not just the discount percentage. Also watch for "was" prices that were artificially inflated to make the discount look bigger.

Stacked discounts are not added together — they're applied sequentially. A 20% off plus an extra 10% off is not 30% off. First apply 20%: $100 → $80. Then apply 10% to the new price: $80 → $72. The total saving is 28%, not 30%.