Discount Calculator
Formula
Sale Price = Original × (1 − Discount% ÷ 100)
To calculate a discounted price, multiply the original price by the discount percentage divided by 100 to get the savings. Subtract the savings from the original price to get the final sale price.
How to use
- Enter the item's Original Price.
- Enter the Discount percentage being applied.
- Read the Sale Price and how much You Save.
Example
A $100 item at 20% off saves you $100 × 0.20 = $20, bringing the sale price to $80. You pay $80 and keep $20 in your pocket.
Frequently Asked Questions
How do I calculate 20% off?
Multiply the price by 0.20 to get the discount amount, then subtract from the original. $100 × 0.20 = $20 off, so the sale price is $80.
What is 30% off $50?
$50 × 30% = $15 off. Sale price: $35.
How do I calculate the original price from a sale price?
Divide the sale price by (1 − discount/100). If something is $60 after 25% off: $60 ÷ 0.75 = $80 original.
How do I combine two discounts, like 20% off plus an extra 10%?
Stacked discounts are applied one after another, not added together, so 20% off then an extra 10% off is not 30% off. On a $100 item, the first discount brings it to $80, and 10% off that is $8, leaving a final price of $72. That's an effective discount of 28%, slightly less than a single 30%-off deal.
How do I work out the discount percentage from the dollar amount saved?
Divide the amount you saved by the original price, then multiply by 100. If a $250 jacket is marked down to $200, you saved $50, and $50 divided by $250 is 0.2, or 20% off. This is useful for checking whether an advertised sale is as good as it claims.