Discount Calculator

A discount reduces the original price of an item by a specified percentage. Retailers express discounts as "25% off," "30% off," or "buy one get one half off." The core formula is: discount amount = original price × (discount percentage ÷ 100), and sale price = original price − discount amount. Alternatively, sale price = original price × (1 − discount percentage ÷ 100).

For example, a $200 item with a 25% discount saves you $200 × 0.25 = $50, leaving a sale price of $150. The savings is simply the difference between what you would have paid and what you actually pay. Knowing both figures helps you evaluate whether a sale is genuinely worthwhile or just marketing hype.

Stacked discounts require sequential application, not addition. If an item is 20% off and you have an additional 10% coupon, you apply 20% first, then 10% to the reduced price — not 30% off the original. A $100 item after 20% off costs $80; an additional 10% off $80 saves $8, for a final price of $72 — equivalent to 28% off the original, not 30%.

Reverse calculations are also useful: given a sale price and discount percentage, you can find the original price by dividing the sale price by (1 − discount ÷ 100). If something costs $75 after a 25% discount, the original price was $75 ÷ 0.75 = $100. This helps verify that advertised "was/now" pricing is accurate.

Whether you are comparison shopping during holiday sales, evaluating a coupon, or checking markdown math at checkout, this calculator gives you the sale price and total savings instantly. Enter the original price and discount percentage to see exactly how much you keep in your wallet.