Discount Calculator

Multiply the price by the percent off as a decimal to get the savings, then subtract that from the price for the sale price. So 25 percent off 80 dollars is a 20 dollar saving and a 60 dollar sale price. The calculator does it instantly, and it handles a second stacked discount and sales tax too, so you'll see the real final price, not just the headline cut.

Sale price is the original price times one minus the discount. At 25 percent off, that's 80 times 0.75, which is 60 dollars. An easy shortcut: 25 percent off means you pay 75 percent, so multiply by 0.75. The tool shows the sale price, the amount you save, and the final price after tax, all from the original price and the percent off.

It's a second discount applied after the first, like an extra 10 percent off an already-reduced price. They don't simply add up: 25 percent then 10 percent isn't 35 percent off. The tool applies them in order, so 80 dollars at 25 percent is 60, then 10 percent off that is 54, an effective 32.5 percent off. Enter the extra percent and you'll see the true total.

Divide the amount you saved by the original price, then times 100. If a 50 dollar item now costs 40, you saved 10, and 10 divided by 50 is 0.2, or 20 percent off. The reverse box above does this for you: type the original and the sale price, and it shows the percentage discount you're getting.

It can. Enter your sales tax rate and the tool adds it to the discounted price for the final amount you'll pay at the register. Tax is charged on the sale price, not the original, so a discount lowers the tax too. Leave the tax field at zero to see the pre-tax sale price on its own.

Yes to both. There's no sign-up, no limit, and nothing to install, since it works with nothing to install. The prices you type stay on your device and aren't sent anywhere. Bookmark it on your phone and you'll have a quick way to check a sale price while you're shopping.

It's 40 dollars. Twenty percent of 50 is 10, so you save 10 dollars and pay 40. Another way to see it: 20 percent off means you pay 80 percent, and 50 times 0.80 is 40. Type 50 and 20 percent above and you'll get the same 40, plus the tax total if you add a rate.

You pay 70 dollars and save 30. Thirty percent of 100 is a 30 dollar cut, and 100 times 0.70 is 70. The reference table above lists more prices at common percentages, or enter any figure and percent off for the exact sale price.

Fifty percent off is half price, so you just halve the number. 50 percent off 34.99 dollars is 17.50, and 50 percent off 50 dollars is 25. Whatever you pay is also what you save, since both are half the original. The tool shows the sale price and the saving, and it'll add sales tax to the half-price figure if you enter a rate.

Divide the sale price by one minus the discount as a decimal. If an item is 40 percent off and now costs 45 dollars, that's 45 divided by 0.60, so the original was 75 dollars. For a half-price item, just double the sale price. The reverse box above goes the other direction, turning an original and a sale price into the percent off.