Discount Calculator
Calculate discount amount and final price from discount rate.
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Overview
The Discount Calculator computes the final price after applying a discount percentage, or reverse-calculates the discount rate between two prices. It helps you quickly see how much you save during sales, with coupons, or special offers.
Formula
Discount Amount = Original Price × (Discount Rate / 100). Final Price = Original Price − Discount Amount. Discount Rate = ((Original Price − Sale Price) / Original Price) × 100.
How to Use
- 1Enter the original price.
- 2Enter the discount rate (%).
- 3The discount amount and final price are displayed automatically.
- 4Alternatively, enter both original and sale prices to reverse-calculate the discount rate.
Tips
- ✔Stacked discounts (coupon + sale) are applied sequentially, so they differ from simple addition.
- ✔Verify the original price has not been inflated before the sale.
- ✔Factor in credit card cashback or reward points for the effective discount rate.
- ✔A buy-one-get-one-free offer is equivalent to a 50% discount.
FAQ
Q. Is a 30% discount the same as 20% off plus an extra 10% off?
No. A 20% discount followed by an additional 10% results in a total discount of 28% (0.8 × 0.9 = 0.72). Sequential discounts yield less than their simple sum.
Q. Is the discount applied to the VAT-inclusive price?
In most consumer contexts, prices already include sales tax, so you apply the discount rate directly to the listed price.
Q. Is a higher discount rate always a better deal?
Not necessarily. If the original price was inflated before the discount, the actual savings may be less. Always compare with the regular market price.
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