How it works
Markup is added to cost to reach the price; the resulting margin is smaller because it is measured against the higher price.
Example
A $42 cost marked up 65% sells at $69.30, giving $27.30 of profit and a 39.39% margin.
This tool is for estimation and education, not financial, tax, or legal advice.
Frequently asked questions
Is this an accounting system?
No. Each tool answers one question from figures you already have, with the method shown.
Does the calculator send my numbers anywhere?
No. The calculation runs locally in your browser.
Which figures should I use?
Whatever period you are judging — a month, a quarter, a year — as long as every input covers the same one.
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