Calculate the final price after discount, the amount saved, or the original price before discount. Supports both percent-off and fixed-amount-off discounts. Enter any 2 values and the rest will be calculated automatically. 100% free, private, and runs entirely in your browser.
💡 Enter any 2 values, then click Calculate. The remaining fields will be filled automatically.
A discount is a reduction in the price of a product or service. Discounts are used everywhere — retail stores, online shopping, restaurant coupons, subscription services, and business-to-business transactions. They serve many purposes: clearing out old inventory, rewarding loyal customers, attracting new buyers, or running seasonal promotions.
There are two primary types of discounts, both of which this calculator supports:
Beyond these two basic types, there are also stacked discounts, buy-one-get-one (BOGO) offers, volume discounts, and coupon combinations. This calculator focuses on the two most common — and most frequently used — types.
The math is straightforward. Convert the percentage to a decimal, multiply by the original price to find the discount amount, then subtract from the original price:
There's a shortcut: you can also multiply the original price by (1 − discount/100) to get the final price directly. For example, 15% off means paying 85% of the price:
Even simpler — just subtract the fixed amount:
Sometimes you know the final price and the discount, but not the original price. To work backwards:
If you know the original and final price but not the discount percentage:
Here are some common discount scenarios to help you see how the calculator works in practice:
| Scenario | Original Price | Discount | Final Price | You Save |
|---|---|---|---|---|
| Clothing sale (20% off) | $89.99 | 20% | $71.99 | $18.00 |
| Restaurant coupon ($10 off) | $65.00 | $10.00 | $55.00 | $10.00 |
| Electronics (15% off) | $499.00 | 15% | $424.15 | $74.85 |
| Grocery store ($5 off) | $120.50 | $5.00 | $115.50 | $5.00 |
| Black Friday (40% off) | $250.00 | 40% | $150.00 | $100.00 |
| Clearance (75% off) | $40.00 | 75% | $10.00 | $30.00 |
Understanding discounts helps you make smarter buying decisions. A "30% off" tag on a $100 item saves you $30 — that's real money. Comparing discounts between different stores, or between "20% off" and "$15 off," requires a quick mental calculation. This calculator does it instantly so you can decide fast.
It's also useful for checking whether a claimed discount is actually a good deal. Some retailers inflate the "original price" to make a discount look bigger. Knowing the math lets you spot these tricks.
Discounts are a powerful marketing tool. They can:
In B2B transactions, discounts are common for early payment (e.g., "2/10 net 30" means 2% off if paid within 10 days, otherwise full amount due in 30 days), bulk orders, or long-term contracts. Getting the math right is critical for maintaining healthy profit margins.
Not every "discount" is a good deal. Watch out for these common tricks:
Many retailers — especially smaller ones — have the flexibility to offer discounts if you ask. This works particularly well when:
When stores allow it, stack discounts in the right order. For example, if you have a 10% coupon and a $20-off coupon, using the $20-off first usually saves more (because the 10% applies to the already-reduced price).
Big sale events (Black Friday, Cyber Monday, end-of-season clearance, back-to-school) offer the deepest discounts. Planning major purchases around these events can save you 30–70%.
Credit card rewards, cashback apps, and store loyalty programs effectively add a second layer of discount on top of any sale price. Stack them when possible.
Many retailers offer a "10% off your first order" or "15% off for subscribers" discount just for signing up. This is one of the easiest discounts to get.
A discount is typically a temporary price reduction applied at checkout or through a coupon. A markdown is usually a permanent price reduction — often used for clearance items that won't return to full price. In everyday conversation, the terms are often used interchangeably.
Quick mental math tricks:
Yes, technically. A 100% discount makes the item free. A discount greater than 100% would mean the store pays you to take the item — which sometimes happens with rebates on items like phones (where the item is "free" but you receive a rebate larger than the price), or in promotional giveaways. However, in normal retail transactions, discounts almost never exceed 100%.
Stacked discounts are applied one after another. For example, "20% off, then an additional 15% off" means:
Important: This is NOT the same as 35% off. It's actually equivalent to 32% off (because the second discount applies to the already-reduced price). This calculator handles single discounts; for stacked discounts, run the calculation twice.
No. This is one of the most common math mistakes in shopping. A 20% discount followed by a 10% discount is NOT the same as a 30% discount.
For example, on a $100 item:
The combined effect is actually 28% off, not 30%. As a general rule, stacked discounts always yield less savings than adding the percentages together.
In most jurisdictions, sales tax is calculated on the discounted price (what you actually pay), not the original price. However, this varies by country and region — and some rebate programs (as opposed to instant discounts) tax the full price. Always check local tax rules, or ask the seller.
It depends on the purchase amount. Here's the rule:
There's a "break-even point" where both types save the same amount. Using this calculator, you can quickly compare both.
This calculator is designed for discounts specifically. For tips, you'd multiply the bill by the tip percentage and add it to the total (the opposite of a discount). For sales tax, you'd multiply the price by the tax rate and add it. If you need those tools, check our other financial calculators.
This discount calculator runs entirely in your browser using JavaScript. No data is sent to any server. All calculations happen locally on your device. Your pricing and discount information never leaves your computer, making this tool completely private and secure.
You can even use this calculator offline — just save the page to your device.