Discount Calculator
Free online discount calculator. Enter original price and discount percentage to find the sale price, amount saved, and final cost. Calculate multiple discounts, stacking deals, and coupon savings instantly.
Discount Calculator
Enter the original price and a discount percentage to instantly see the sale price and how much you save.
Common Sale Events
Black Friday / Cyber Monday: The biggest retail sales of the year, typically 20–50% off across electronics, clothing, and home goods. Deals go live as early as two weeks before Thanksgiving.
End-of-Season Clearance: Retailers mark down seasonal inventory — winter coats in January, swimwear in August — by 40–75% to clear shelf space for the next season.
Back-to-School Sales: Late July through August. Laptops, backpacks, clothing, and school supplies are discounted 10–30%. Tax-free weekends in many US states amplify the savings.
Flash Sales: Short-window deals (often 24–48 hours) from online retailers like Amazon, Target, or specialty stores. Discounts of 30–60% are common, but stock is limited.
Stacking Discounts
When two percentage discounts are applied one after another, the combined savings are less than the sum of the two percentages. A 20% sale followed by an extra 10% off equals 28% total savings, not 30%. Apply percentage discounts sequentially: start with the larger one, then apply the smaller one to the reduced price.
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How Discounts Work
A discount reduces the original price by a percentage, giving you the sale price. The formula is: Sale Price = Original Price × (1 - Discount% / 100). For example, a 30% discount on a $80 item gives you $80 × (1 - 0.30) = $80 × 0.70 = $56.
To find the discount amount: Discount Amount = Original Price × (Discount% / 100). In our example, $80 × 0.30 = $24 off. You can also think of it as: Sale Price = Original Price - Discount Amount.
Understanding discounts helps you evaluate deals quickly. A "50% off" sale sounds impressive, but knowing the actual dollar savings helps you decide if the purchase is worth it. Sometimes a smaller percentage off a higher-priced item saves more money than a larger percentage off a cheaper item.
Stacking Discounts and Coupons
When multiple discounts apply, the order matters because discounts don't simply add together. If you have a 20% off sale plus a 10% coupon, you don't get 30% off. Instead, the second discount applies to the already-reduced price.
For example, on a $100 item: First, 20% off brings it to $80. Then, 10% off $80 equals $8, bringing the final price to $72. That's equivalent to 28% off the original price, not 30%.
The formula for stacked discounts is: Final Price = Original × (1 - Discount1%) × (1 - Discount2%). Most retailers apply the largest discount first, then additional coupons or promotions. Some stores don't allow stacking at all. Always read the fine print on promotional offers to understand how discounts combine.
Evaluating Sale Prices
Not all sales are created equal. Retailers use psychological pricing tactics that can make deals seem better than they are. A "BOGO 50% off" (buy one get one 50% off) is actually just 25% off your total purchase.
To find the true discount percentage when you know both prices: Discount% = ((Original - Sale) / Original) × 100. If a $120 jacket is now $84, the discount is (($120 - $84) / $120) × 100 = 30%.
Compare unit prices when items come in different sizes. A larger package on sale might still cost more per unit than a regular-priced smaller package. Look for "compare at" prices that may be inflated. The best approach is knowing the regular prices of items you frequently buy so you can recognize genuine deals. Use this calculator to quickly verify savings before making purchase decisions.
Quick Discount Reference
| Original Price | 25% Off | 33% Off | 50% Off |
|---|---|---|---|
| $20 | $15 | $13.40 | $10 |
| $50 | $37.50 | $33.50 | $25 |
| $100 | $75 | $67 | $50 |
| $200 | $150 | $134 | $100 |
Stacked Discount Results
| First Discount | Second Discount | Total Savings |
|---|---|---|
| 10% | 10% | 19% (not 20%) |
| 20% | 10% | 28% (not 30%) |
| 25% | 15% | 36.25% (not 40%) |
| 30% | 20% | 44% (not 50%) |
| 50% | 20% | 60% (not 70%) |
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