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Discount Calculator

Know what "40% off + extra 20% off" really means.

Stores count on discount math being confusing — a "40% off plus an extra 20% off" sale is not 60% off, it is 52%. This calculator applies discounts the way registers do: sequentially, each one shrinking the already-reduced price. Enter the original price and up to two stacked discounts to see the true final price, your total savings, and the honest effective discount.

Why people use this

People use this standing in the store aisle. Stacked sales ("40% off + extra 20% off") are designed to feel bigger than they are, and this calculator reveals the register truth in seconds — whether that "deal" is 60% off or actually 52%, and what you really save.

How it works

1. Enter the original (pre-discount) price.
2. Enter the first discount percentage.
3. Optionally add a second, stacked discount (coupon, loyalty code).
4. See the final price, total savings, and effective discount percentage.

Common questions

Why are stacked discounts smaller than they look?

Because the second discount applies to the already-reduced price, not the original. 40% off $100 leaves $60; a further 20% off removes $12, not $20. Combined effect: 52% off.

Does the order of discounts matter?

No — multiplication is commutative. 40% then 20% gives the same final price as 20% then 40%.

Is a "buy one get one 50% off" deal really 25% off?

Only if you buy exactly two identical items and want both. You pay 1.5x for 2 items, which is 25% off the pair — but 0% off if you only needed one.

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