🏷️ Discount Calculator
See the final sale price and exactly how much you save on any discount. Useful for shoppers comparing deals. Free, unlimited, private — works entirely in your browser.
How to use
- Enter the original price of the item in the price field.
- Enter the discount percentage (for example, type 25 for 25% off).
- The tool instantly shows the discount amount (what you save) and the final sale price (what you pay).
- If there's a tax or VAT field, enter your local rate to see the true total at checkout.
FAQ
Is it really free?
Yes — every tool on this site is 100% free with no limits, no signup and no watermarks.
Is my data private?
Absolutely. All processing happens locally in your browser. Your files are never uploaded to any server.
How is the final price calculated?
Final price = original price × (1 − discount ÷ 100). For example, an $80 item at 25% off: $80 × 0.75 = $60. The discount amount ($20) is shown separately so you can see exactly what you save.
How do I calculate two stacked discounts, like 20% + 10%?
Apply them sequentially, not by adding. First apply 20% to get the intermediate price, then apply 10% to that result. Note that 20% + 10% stacked equals a 28% total discount — not 30% — because the second discount applies to the already-reduced price.
Does the calculator include sales tax or VAT?
If the tool shows a tax field, enter your local VAT/GST rate and it will be added to the discounted price. If not, multiply the final price by (1 + tax rate) yourself — for example, add 17% GST by multiplying by 1.17.
What is the difference between discount amount and sale price?
The discount amount is the money you save (original − final). The sale price is what you actually pay at the register. Both numbers matter: the first tells you the deal's size, the second tells you the cost.
Discount Calculator — Complete Guide
Sale signs are designed to make you feel like you're winning — but is 40% off actually a good deal? This discount calculator cuts through the marketing: enter any price and discount percentage to see exactly what you save and what you pay, instantly and privately in your browser.
The math behind every sale
Discount math is simple but easy to fumble mentally. A 30% discount on a $150 jacket means you pay 70%: $150 × 0.70 = $105, saving $45. The classic mental-math trap is stacked discounts: "extra 10% off already-reduced prices" does not mean 40% total. A $200 item at 30% off becomes $140; an extra 10% off takes it to $126 — a total saving of 37%, not 40%.
Spotting fake discounts
Retailers sometimes inflate the "original" price before a sale so the discount looks bigger. Protect yourself: check the item's price history with a price-tracker, compare the same product at two or three stores, and compute the unit price (price per 100g, per ml) for groceries and household goods — the biggest-looking discount isn't always the cheapest option.
Common discount formats decoded
Percentage off: straightforward — use this calculator. Buy-one-get-one (BOGO): effectively 50% off each if you'd buy two anyway, worthless if the second item goes to waste. Fixed-amount off ($20 off $100): equals a 20% discount at exactly $100, but a smaller percentage on larger carts. Tiered discounts (10% off $50, 20% off $100): calculate each tier to find the real sweet spot — sometimes adding a small item unlocks a tier that saves more than the item costs.
Smart shopping tips
Set a target price before you shop and let the calculator tell you which discount actually reaches it. Factor in shipping — "free shipping over $75" can erase a discount if it tempts you to overspend. And remember taxes: a 25% discount in a 17%-VAT region still leaves you paying more than the sticker suggests. Run the numbers here first, then buy with confidence.
📖 Step-by-step tutorial
New to this tool? Read our step-by-step guide to calculating discounts and sale prices online — with worked examples and practical tips.