About the Discount Calculator
Calculate a sale price after an advertised percentage discount and see the savings on a single item or multiple items.
Formula or method
Discount amount = original price × discount percentage ÷ 100. Sale price = original price − discount amount.
Worked example
For a 100 item discounted by 20%, the sale price is 80 and you save 20 per item. Buying three saves 60 in total before tax and shipping.
How to use the tool
Start with the example values above, then replace each input with your own figures. The results update immediately. Review the units, denominators, and assumptions before using any number in an important decision.
Assumptions and limitations
A percentage discount here applies once to the listed price. Stacked discounts, vouchers, taxes and cash rounding may change the final checkout total.
Frequently asked questions
Does 20% off followed by another 10% equal 30% off?
No. Applied sequentially, 100 becomes 80 and then 72, equivalent to 28% off the original price.
Privacy and support
Your inputs are processed locally in your browser. ToolMosaic does not upload or store the values you enter in this tool. Our tools are free, and we appreciate your support.