Use this free discount calculator to find the sale price, the amount you save, and the discount percentage in seconds. Enter the original price and the discount, and the discount calculator shows the final price instantly — no sign-up, no account, and no personal information needed. Your numbers are calculated in your browser and are not sent to us.
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No sign-up required. This discount calculator works in your browser, so the price and discount you enter are not stored or sent to us. The discount calculator uses two simple steps. First, it works out how much money the discount removes from the price. Then it subtracts that amount from the original price to give the price you pay. Discount amount = Original price × Discount percentage ÷ 100 Final price = Original price − Discount amount For example, a $100 item with a 20% discount gives a discount amount of $100 × 20 ÷ 100 = $20, so the final price is $100 − $20 = $80. The same discount calculator formula works for clothes, electronics, furniture, and any other priced item, in dollars, pounds, or any other currency, because the percentage calculation does not depend on the currency symbol. Using the discount calculator is simple. Type the original price before any discount into the first box. Type the discount percentage into the second box — for a sale marked “20% off”, type 20, not 0.20. Tap Calculate Discount to see the amount you save and the final price at once. If you want to check another item, change the numbers and tap the button again. The discount calculator updates instantly, so you can compare several sale prices while shopping without doing the math by hand. Be careful with two common mistakes. First, do not type the sale price into the original price box, or the discount calculator will apply the discount twice. Second, remember that a discount percentage is not the same as a fixed amount: 20% off $100 is $20, but 20% off $250 is $50. Checking the discount amount, not just the percentage, helps you judge whether a deal is really good value. Example 1 — 20% off $100. Discount amount = $100 × 20 ÷ 100 = $20. Final price = $100 − $20 = $80. You save $20. Example 2 — 25% off $240. Discount amount = $240 × 25 ÷ 100 = $60. Final price = $240 − $60 = $180. You save $60. Example 3 — 15% off $49.99. Discount amount = $49.99 × 15 ÷ 100 = $7.50. Final price = $49.99 − $7.50 = $42.49, rounded to the nearest cent. You save about $7.50. These discount calculator examples show why the same percentage can mean very different savings. A small percentage on a large price can save more than a large percentage on a cheap item, so always compare the final price before you buy. Check whether tax is included before you compare prices. In the United States, sales tax is often added after the discount, while in the United Kingdom prices usually include VAT. If you need the price before tax, use the reverse sales tax calculator to work backwards from a tax-inclusive total. For a plain definition of how a discount works, see Investopedia’s guide to discounts. Also watch for stacked offers: a further 10% off an already discounted price is 10% of the lower price, not 10% of the original price, so the total saving is less than adding the two percentages together. What does a discount calculator do? A discount calculator finds the sale price and the amount saved when a percentage discount is applied to an original price. You enter the price and the percentage, and it returns both results instantly. How do I calculate 20% off a price? Multiply the price by 20 and divide by 100 to get the discount amount, then subtract it from the price. For $100, that is $20 off, giving a final price of $80. Can the discount be more than 100%? No. A discount of 100% means the item is free, and a discount above 100% would give a negative price, which does not make sense for a sale. This discount calculator therefore accepts discounts from 0 to 100 only. Does this discount calculator work for any currency? Yes. The calculation uses percentages, so it works with dollars, pounds, euros, Canadian dollars, and any other currency. Just read the result in the currency you entered. How do stacked discounts worke?Multiply what remains after each discount. A 20% discount followed by 10% off leaves 0.8 x 0.9 = 0.72 of the price, so 28% off in total, not 30%. What is the difference between a discount and a percentage increase? A discount reduces a price by a percentage, while a percentage increase raises a value by a percentage. If a price rises after a sale ends, the percentage increase calculator can measure that change. Try the Percentage Increase Calculator to measure a price rise, the Reverse Sales Tax Calculator to remove tax from a total, the Home Loan Calculator for monthly loan payments, and the Compound Interest Calculator to see how savings grow over time. Return to the PDGPT homepage to browse all free calculators by category. This calculator uses the standard discount formulas: Discount amount = Original price x Discount percentage / 100; Final price = Original price – Discount amount. For a plain definition of how a discount works, see the Investopedia’s guide to discounts. Results are estimates for general planning, not financial advice. Last updated: October 28, 2026.Discount Calculator Formula
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