Discount Calculator
Work out the sale price and amount saved from a price and a percentage off.
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How it works
Enter the original price and the percentage off; the tool multiplies the price by the discount to find the amount saved and subtracts it for the final price. A reverse mode goes the other way: give the original and the final price and it tells you the percentage discount applied. You can stack a second percentage (applied after the first) and optionally add sales tax on the discounted price. All calculation runs in your browser, with currency formatting you control.
saved = price × (pct / 100)
final = price − saved
Common use cases
- Checking the real price of a "40% off" item before buying.
- Finding the percentage discount from a marked-down tag.
- Stacking a coupon on top of a sale to see the final total.
Frequently asked questions
How are stacked discounts calculated?
The second percentage is applied to the price after the first discount, not added to it. A 20% then 10% discount leaves 0.8 × 0.9 = 72% of the original, a 28% total reduction — not 30%.
Can I find the discount percentage from two prices?
Yes. Reverse mode takes the original and final price and returns the percent off: (original − final) ÷ original × 100.
Does it handle sales tax?
Optionally. You can apply a tax rate to the discounted price to see the final out-the-door total. For tax-only math, use the dedicated Sales Tax Calculator.
Embed this tool
Add this free discount calculator to your own website or blog — copy the code below and paste it into your page HTML. No signup, no API key.
<iframe src="https://otoolrun.com/embed/discount-calculator/" width="100%" height="560" style="border:0;border-radius:12px" loading="lazy" title="Discount Calculator"></iframe>
<p style="font-size:14px"><a href="https://otoolrun.com/tools/discount-calculator/">Discount Calculator by oToolRun</a></p>