Free Health Tools: Vitamin D Calculator and More

THURSDAY, 12 NOVEMBER 2026

Free health tools from gesundefakten.com: they run only in your browser and do not store any data. They are for general information only and do not replace medical advice.

Vitamin D Calculator
Convert blood test results from ng/ml to nmol/l and amounts from IU to µg, per day, week or month. With a reference range table and the EFSA upper limit.
Go to the calculator →

More tools are on the way.