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About This Tool
Discount Calculator tells you the final price after applying a percentage discount, the amount saved, and the effective discount percentage when you know the original and sale prices. It covers both directions of the discount question.
Retailers and e-commerce merchants use discount calculations constantly — setting sale prices, verifying margin impact, and communicating savings clearly to customers. Getting the maths wrong erodes profit or misleads buyers.
Tip: To stack discounts such as 20% off then an extra 10% off, apply them sequentially — not additively. A 20% plus 10% stack is a 28% total discount, not 30%.