Discount Calculator
Calculate the sale price and money saved for any discount percentage.
Enter an original price and a percent off, and this discount calculator shows the final sale price and exactly how much you save. It's the quickest way to check a "30% off" sign without second-guessing the mental math.
It also works the other way: knowing the amount saved helps you compare deals that are advertised differently — a flat amount off versus a percentage, for example.
How to use the discount calculator
- Enter the original price.
- Enter the discount percentage.
- Read the sale price and the amount you save.
The math
Amount saved = price × (discount ÷ 100). Sale price = price − amount saved. So a $120 item at 30% off saves you $36 and costs $84. To stack a second discount, apply it to the new price, not the original — two 20%-off coupons together make 36% off, not 40%.
Spotting the better deal
Retailers advertise savings in different shapes on purpose. "$15 off" and "25% off" can't be compared until you convert one to the other — and which wins depends on the price. On a $40 item, 25% off saves $10, so the flat $15 is better; on an $80 item, 25% off saves $20, so the percentage wins. Enter the real price here to turn every offer into an actual dollar figure, and the comparison becomes obvious.
Coupons that stack
When two discounts apply to the same purchase, they multiply rather than add. A 30% storewide sale followed by a 10%-off coupon isn't 40% off — it's 0.70 × 0.90 = 0.63, or 37% off, because the coupon applies to the already-reduced price. To model this, run the calculator once with the first discount, then feed the sale price back in with the second. Knowing the true combined rate helps you judge whether stacking is worth the effort.
Seeing through the sticker price
Retail discounts are designed to feel bigger than they are. "30% off" reads as a large saving, but on a $15 item that's $4.50, while the same percentage on a $900 laptop is $270 — the headline number hides wildly different real value. Converting a percentage into the actual dollars saved and the final price you'll pay is the fastest way to judge whether a deal is worth acting on, especially when you're comparing offers phrased in different ways.
Stacked and sequential discounts are where shoppers get caught out. "50% off, then an extra 20% off" is not 70% off. The second discount applies to the already-reduced price, so a $100 item becomes $50, then $40 — a true saving of 60%, not 70%. The order doesn't change the result, but the intuition almost always overstates the total. Running each step through a calculator keeps you honest and occasionally reveals that a single larger discount elsewhere beats a tempting-looking stack.
Frequently asked questions
How do I calculate a percentage discount?
Multiply the price by the discount percentage divided by 100 to get the savings, then subtract that from the price. This tool does both steps instantly.
How do stacked discounts work?
Apply them one after another. Two 20% discounts don't make 40% off — the second applies to the already-reduced price, giving 36% off in total.
Does it include tax?
No, it calculates the pre-tax discount. Add sales tax to the final price separately if you need the checkout total.
Is a percentage discount always better than a flat amount?
No — it depends on the price. A percentage saves more on expensive items; a flat amount saves more on cheap ones. Convert both to dollars for the specific price to see which wins.
Do two stacked discounts add together?
No. A second discount applies to the price after the first is taken off, so 50% then 20% equals 60% off in total, not 70%.
Last updated: 2026-01-15