Question 1

Are stacked discounts the same as adding the percentages together?

Accepted Answer

No — stacked discounts apply one after another to a shrinking price, not to the original price each time. Two 20% coupons stacked give you 36% off total, not 40%: the first 20% brings $100 down to $80, then the second 20% takes $80 down to $64, a combined 36% savings. The more discounts you stack, the bigger this gap between the naive sum and the real total becomes — always calculate sequentially, never add the percentages.

Question 2

How do you calculate the original price from a sale price?

Accepted Answer

Divide the sale price by (1 − discount ÷ 100). A $70 item marked '30% off' had an original price of $70 ÷ 0.70 = $100. This is the exact inverse of the normal discount formula, and it's useful for spotting inflated 'original' prices retailers sometimes list before a sale — if the math doesn't check out, the discount may not be as real as advertised.

Question 3

What's the effective discount on a Buy 2 Get 1 Free deal?

Accepted Answer

You pay for 2 out of every 3 items, so the effective discount is 1 ÷ 3 ≈ 33.3% off the total — not 50%, which is a common mistake. The confusion comes from thinking of the free item as '50% off the other two,' but spread across all three items purchased, the true blended discount is one-third.

Question 4

How do I calculate a percentage discount manually?

Accepted Answer

Multiply the original price by the discount percentage (as a decimal) to get the amount saved, then subtract that from the original price to get the final price: Final Price = Original × (1 − Discount% ÷ 100). For a $50 item at 25% off, that's $50 × 0.75 = $37.50, a savings of $12.50.

Item	Price	Disc %	Final
			$23.99
			$50.99
			$62.99

Discount Calculator

Price Breakdown

Original vs Final Price

🛒 Multi-Item Cart Builder

How to Calculate Discounts

Discount Formulas

Stacked Coupons

BOGO Deals

Reverse Calculate

Cart Builder

Frequently Asked Questions

Related Calculators