Discount Calculator
This free discount calculator turns any sale tag into the price you actually pay. Enter a price and a discount to see the sale price, how much you save, and the true percent off. Use percent or fixed amount off, tap a preset, stack a coupon, add sales tax, or reverse to find the original price.
How to use the discount calculator
Choose a mode
Pick Find sale price to discount an original price, or Find original price to work backward from what you paid.
Enter the price and currency
Type the amount and pick your currency ($, EUR, GBP, INR, or JPY) from the dropdown next to it.
Set the discount
Enter a percent or a fixed amount off, or tap a quick preset like 25%. Add an extra stacked discount or sales tax if you need to.
Read the result
See the final price, the total you save, the effective percent, and a line-by-line breakdown, all updating live.
How to calculate a discount
A discount calculator does the markdown math for you, so a sale tag turns into the price you actually pay in one step. Enter the original price, enter the discount, and you get the sale price, the money you save, and the true percent off.
The formula is simple. Sale price = original price x (1 minus the discount percent divided by 100). An $80 jacket at 25% off is 80 x (1 – 0.25) = $60, so you save $20. Prefer a flat coupon? Switch to Amount off and subtract a dollar figure instead, like $15 off that same jacket.
Two things trip people up, and this tool handles both. First, stacked deals. An extra 10% off an already discounted price does not add up to 35% off, it compounds, and the calculator shows the real total. Second, sales tax. Tax applies after the discount, so it is added to the reduced price, not the sticker price.
Need to work backward? Reverse mode takes the sale price you paid and finds the original. Paid $1,750 on a 30% off tag? The original was $2,500. That is a quick way to check whether a “70% off” claim is actually true. Pick your currency, tap a preset like 25%, and every figure updates as you type. Nothing you enter leaves your browser. For plain percentage math without prices, try the percentage calculator.
Why use this discount calculator
Percent or fixed amount off
Take a percentage off or subtract a flat dollar amount. Switch between the two without retyping the price.
Quick discount presets
Tap 10, 20, 25, 50, or 70 percent to fill the discount in one click, the markdowns you see most in stores.
Stack a second discount
Add an extra discount on top of the first. The calculator compounds them correctly instead of just adding the percentages.
Sales tax built in
Add your local sales tax and see the real checkout price. Tax is applied after the discount, the way a register does it.
Sale price or reverse
Find the sale price from an original, or reverse it to find the original price from what you actually paid.
Any currency, fully private
Switch between dollar, euro, pound, rupee, and yen. Every calculation runs in your browser, so nothing is uploaded.
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Frequently Asked Questions
Quick answers about discount math, Standard vs Reverse mode, and what this tool does.
How do you calculate a discount?
Multiply the original price by the discount percent, then subtract that from the price. For 25% off a $80 item: 80 x 0.25 = $20 off, so you pay $60. In one step, sale price = price x (1 minus percent divided by 100). This discount calculator does that math the moment you type a price and a percent.
How do I calculate a percent off a price?
Divide the percent by 100 and multiply by the price to get the amount off. A 30% discount on $50 is 0.30 x 50 = $15 off, so the sale price is $35. Enter the price and 30 in the calculator, or tap a preset, and it shows the $15 saved and the $35 you pay instantly.
How do I find the original price from a sale price?
Switch to Find original price mode and enter what you paid plus the discount that was applied. If you paid $1,750 on a 30% off tag, the original was $2,500, because $1,750 divided by (1 minus 0.30) equals $2,500. This is the fastest way to check if an advertised discount was real.
Can I stack two discounts or coupons?
Yes. Enter your main discount, then add a second one in the extra discount field. The calculator compounds them, so 20% off followed by an extra 10% off is not 30% off, it is 28% off. Stacked coupons almost always save less than the two percentages added together, and this shows the true total.
Does the calculator add sales tax?
Yes. Enter your sales tax percent and it is added after the discount, exactly like a checkout register. On a $60 sale price with 8% tax, you pay $64.80. Leave the tax field blank if you only want the pre-tax sale price. Tax never applies to the original sticker price, only the discounted amount.
What currencies does the discount calculator support?
Use the currency selector next to the price to switch between the US dollar, euro, British pound, Indian rupee, and Japanese yen. It only changes the symbol shown next to your numbers. The discount math is identical for every currency, so the tool works anywhere you shop.
Is this discount calculator free and private?
Yes on both. It is completely free with no signup, no limits, and no watermark. Every calculation runs in your browser using JavaScript, so the prices you enter are never sent to a server or stored anywhere. Close the tab and nothing is left behind.