Calculate sale prices, savings amounts, and apply multiple discounts. Perfect for shopping, Black Friday deals, and comparing prices after discounts and tax.
A discount reduces the original price by a percentage. For example, a 20% discount means you pay 80% of the original price. The discount amount is calculated by multiplying the original price by the discount percentage, then subtracting from the original price.
When multiple discounts are applied, they compound rather than add. A 20% discount followed by a 10% discount doesn't equal 30% off. Instead, the second discount applies to the already-reduced price, resulting in only 28% off total (you pay 0.8 × 0.9 = 0.72 of the original).
Pro Tip: To quickly calculate 10% off, move the decimal point one place left. For 20% off, double that amount. For 25% off, divide the price by 4 and subtract. For 50% off, simply divide by 2. These mental math tricks help you shop smarter!