Discount Calculator – Find Sale Prices and Savings
Calculate savings and final price for single or stacked discounts.
About the Discount Calculator
What is the Discount Calculator?
A discount calculator computes the final price when one or two discounts apply in sequence.
Why use this calculator?
Retailers often stack a storewide sale with a coupon. Knowing the effective combined discount prevents the common mistake of adding the percentages together.
How to use it
- Enter the original price.
- Enter the first discount and, if any, a second.
- See the final price and the true combined discount.
Formula
Final = price × (1 − d1) × (1 − d2)
Sequential discounts multiply and never quite equal the sum of the percentages.
Frequently Asked Questions
Why is 20% + 20% not 40% off?
The second discount applies to the already-reduced price, so the total discount is about 36%, not 40%.
Which discount should I apply first?
The order does not change the final price for percentage discounts, but it can matter if one discount is a fixed dollar amount.
Can I print or share my result?
Yes. Use your browser's print function or screenshot the result. The page is designed to print cleanly.
What if my inputs are outside the typical range?
The calculators accept a wide range of values, but extreme inputs may produce unrealistic results. Double-check the units you are using.
How often is the calculator updated?
We review formulas and rates periodically to keep them aligned with current standards and published data.
Is this calculator free to use?
Yes. Every calculator on this site is completely free, with no hidden fees, no subscriptions and no limits on how many times you can use it.
How accurate are the results?
We use standard, widely accepted formulas and calculate in your browser using double-precision arithmetic. Results are rounded for readability, so treat them as reliable estimates rather than a guarantee. Real-world factors can vary the true figure.
Can I add this calculator to my own website?
Yes. Open this calculator page and use the "Add to your website" box in the sidebar to copy a ready-made iframe snippet, then paste it into any HTML page.
Does it work on a phone or tablet?
Yes. The layout is fully responsive, so it works on desktops, laptops, tablets and mobile phones, and every input adapts to touch screens.
Is the information I type kept private?
Yes. All calculations run locally in your browser. Nothing you enter is uploaded, stored or shared with anyone.