How it works
Cost of goods sold divided by average inventory gives turns per year; 365 divided by turns converts that into days of stock.
Example
$960,000 of cost against $120,000 of average inventory is 8.00× a year, about 46 days of stock.
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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