Discount Calculator: Find Sale Price and Savings
Calculate a sale price from an original price and discount, find how much you save, work backward from a sale price, or compare two discounts applied one after another. The example starts with $120 and 25% off so the result is easy to check.
Discount Calculator
Runs in your browser$120.00 less 25% gives a sale price of $90.00, so the discount saves $30.00.
Discount calculation results
The price before the discount is applied.
The dollar amount removed from the original price.
The amount due before sales tax, shipping, or other charges.
The savings expressed as a percentage of the original price.
The calculation updates with your selected mode and inputs.
A compact check of the price relationship.
Subtract the savings from the original price to verify the result.
Formula used
$120.00 x (1 - 25% / 100)How to read the result
- This example saves $30.00 before tax, shipping, or other checkout charges.
Try a common discount scenario
Use a worked example to see how percentage, fixed-amount, reverse, and stacked discounts differ.
15% off an $80 item
A store sale reduces an $80 price by $12, leaving $68 before tax.
$35 coupon on a $240 order
A fixed coupon removes $35 from a $240 order, leaving $205 before other charges.
Find the discount on a receipt
A price falling from $150 to $112.50 represents a 25% discount.
20% off, then another 20% off
Two sequential 20% discounts leave $128 from a $200 original price, an effective 36% discount.
How to use the discount calculator
Choose the relationship you know, enter consistent prices, and check the result before applying tax or other checkout charges.
Choose the result
Select sale price, savings, original price, discount percentage, or stacked discounts based on the numbers you already have.
Enter the price
Use the original price for a normal discount, or use the sale price when you are reversing a known percentage discount.
Add the discount
Choose percentage or fixed amount. For two promotions, enter the second percentage separately so it is applied to the reduced price.
Check the total
Review the sale price, savings, effective percentage, formula, and quick check. Tax, shipping, and fees are not included.
Discount examples at a glance
These examples show how the same original price changes with different promotional structures.
| Scenario | Original | Discount | Savings | Final price |
|---|---|---|---|---|
| 10% percentage off | $100.00 | 10% | $10.00 | $90.00 |
| $15 fixed coupon | $100.00 | $15.00 | $15.00 | $85.00 |
| 25% percentage off | $120.00 | 25% | $30.00 | $90.00 |
| 20% then 20% | $200.00 | 20% + 20% | $72.00 | $128.00 |
| 50% percentage off | $80.00 | 50% | $40.00 | $40.00 |
Results are shown before sales tax, shipping, tips, service fees, and any minimum-spend rule. Retailers may round each line item differently.
Discount formulas explained
Use the formula that matches the type of promotion or the information printed on a receipt.
Percentage discount
Savings = original price x discount % / 100Subtract savings from the original price to get the sale price.
Sale price
Sale price = original price x (1 - discount % / 100)A 25% discount means you pay the remaining 75% of the original price.
Reverse a discount
Original price = sale price / (1 - discount % / 100)This works when the discount percentage is known and less than 100%.
Stacked discounts
Final = original x (1 - first %) x (1 - second %)The second percentage applies to the already-reduced price, not the original price.
Discount vs. markup
Discounts reduce a customer price; markups increase a cost to set a selling price.
| Question | Discount | Markup | Best for |
|---|---|---|---|
| Starting point | Original selling price | Cost or purchase price | Choosing the right base |
| Direction | Moves price down | Moves price up | Promotion vs. pricing |
| 25% example | $100 becomes $75 | $100 cost becomes $125 | Explaining the difference |
| Common mistake | Applying a second discount to the original | Confusing markup with margin | Avoiding pricing errors |
When a discount calculator helps
A quick calculation is useful whenever the promotion language and the final price do not line up clearly.
Shopping and checkout
Check a sale tag, coupon, or clearance price before adding tax and delivery. It can reveal whether a fixed coupon or percentage offer saves more.
Retail and ecommerce
Set sale prices consistently, compare promotion options, and show the savings amount without changing the original list price.
Receipts and invoices
Work backward from a before-and-after price to estimate the discount percentage used on a receipt or quote.
Two-step promotions
Model a member discount followed by a seasonal offer. The calculator keeps the second percentage tied to the already-discounted price.
Important discount edge cases
The result is only as useful as the assumptions behind the price and promotion.
100% off
A full discount makes the final price zero. You cannot reverse a 100% discount to recover a finite original price.
Fixed discount above price
A $30 coupon on a $20 item cannot create a negative checkout price. Check whether the offer has a cap or minimum spend.
Stacked percentages
20% off followed by 20% off equals 36% off overall, not 40%, because the second discount uses the reduced base.
Tax and shipping
This page calculates the discounted item or order price before sales tax, shipping, tips, and service charges.
Rounding
A retailer may round each item or the final basket to cents. A small difference can appear when several lines are discounted.
Sale price above original
A price above the original is not a normal discount. It may reflect a markup, fee, add-on, or a different comparison price.
Discount calculator FAQ
Answers to common questions about percentage off, fixed coupons, reverse discounts, and stacked promotions.
Ready to check a discount?
Enter the price and promotion above to see the sale price, savings, formula, and assumptions in one place.