Discount Calculator
What you actually pay after a discount — or work out what discount you got.
How discounts are calculated
A discount is just a percentage of a value, subtracted from that value — the same math as the Percentage Calculator's "increase/decrease" tab, applied one way only.
Example: a $100 jacket with a 20% discount → 100 − 20 = $80.
Working out the discount percentage
If you know the original and sale price but not the percentage, divide the amount saved by the original price.
Example: a $100 item on sale for $80 → ((100 − 80) / 100) × 100 = 20% off.
Examples
- Clothing sale: a $90 jacket at 30% off costs $63.
- Electronics: a $1,200 laptop at 15% off costs $1,020.
- Reverse lookup: a $250 item marked down to $200 is a 20% discount.
Frequently asked questions
Multiply the price by the discount percentage, then subtract that from the price. A $100 item at 20% off is 100 − 20 = $80.
Yes, but apply them one after another, not added together. 20% off, then a further 10% off, is not 30% off overall — it's 28%, since the second discount applies to the already-reduced price.
Subtract the sale price from the original price, divide by the original price, then multiply by 100. Use the "Find the discount %" tab above to do this instantly.