Applying multiple discounts one after another — a sale price, then a coupon, then a loyalty discount — doesn't simply add the percentages together, since each discount applies to the already-reduced price, not the original. This calculator gets the sequencing right.
Enter your starting price and list each discount percentage in the order it's applied; the calculator reduces the price step by step, showing the final result along with the total amount saved and the effective overall discount percentage.
This reveals why stacked discounts are usually less generous than they first appear — 20% off plus 10% off isn't 30% off overall, it's closer to 28%, since the second discount applies to an already-reduced price.
Because everything runs locally in your browser, results appear instantly and nothing you type or upload is ever sent to a server.
Bookmark this page if you expect to use this tool regularly — it loads fast and behaves the same way every time, with no account needed.
This kind of task shows up constantly in everyday writing, coding, design, and admin work, which is exactly why a dedicated, focused tool saves so much back-and-forth.
A tool that does one job well, without a cluttered interface or unrelated features competing for attention, tends to be faster to use than a heavier all-in-one app.
If you find yourself needing this conversion or calculation often, keeping this page open in a tab is usually faster than digging through a bigger software suite's menus.
Frequently asked questions
Why isn't 20% + 10% the same as 30% off?
Each discount applies to the price after the previous discount, so the second percentage is calculated on a smaller base — the combined effect is always less than simply adding the percentages together.
Does the order of discounts matter?
Mathematically, applying the same set of percentage discounts in any order produces the same final price, since multiplication is commutative — only the running totals along the way differ.