Discount Calculator

Discount calculations seem simple but contain a common pitfall: successive discounts do not add up. If a €200 item is first reduced by 20% (to €160) and then by an additional 10%, that second 10% applies to €160 — not to the original €200. The final price is €144, representing a 28% total discount, not 30%. Retailers sometimes advertise stacked discounts precisely because consumers tend to add the percentages and expect a higher saving than they actually receive. This tool calculates compound discounts correctly so you see the real final price.

Beyond simple retail pricing, discount calculation has applications in B2B sales (trade discounts, volume discounts), subscription pricing (annual plan vs. monthly price), and coupon stacking (promotional code on top of a sale price). The reverse calculation mode — finding the original price from a discounted price — is useful when you see a sale tag and want to know what the item originally cost, or when reconciling invoices where discounts were applied before you received the final amount. All calculations run instantly in your browser with no data transmitted externally.