How to use the Discount Calculator
- Enter the original price.
- Enter the discount percentage.
- If there's an extra discount on top, enter it too.
- Read the sale price, the amount saved and the true total discount.
What does this tool do?
Stores often advertise “30% off, plus an extra 20%”. That isn't 50% off: the second discount applies to the already-reduced price, so the real total is 44%. This calculator applies discounts in order and shows the true figure.
Why use it?
- Shows the real total discount on stacked deals.
- Works in any currency.
- Quick enough to use in a shop on your phone.
Example: stacked discounts
A $120 jacket is 25% off, with an extra 10% at checkout. After 25%: $90. After the extra 10%: $81. You save $39, a total discount of 32.5% — not 35%.
The formula
Sale price = Price × (1 − d₁ ÷ 100) × (1 − d₂ ÷ 100)
Total discount = (Price − Sale price) ÷ Price × 100
Privacy
The calculation happens instantly in your browser. The numbers you enter are not sent to our servers or saved. There's no account to create and nothing to install.
Frequently asked questions
How do I find the original price from a sale price?
Divide by (1 − discount). A $60 item that's 25% off was originally $60 ÷ 0.75 = $80.
Last reviewed by the M2Toolkit team.