Testosterone Unit Converter

In short Testosterone is reported in ng/dL in some countries and nmol/L in others, and the two are related by a fixed factor: 1 ng/dL = 0.0346703 nmol/L, so to go the other way you divide by 28.8431. 300 ng/dL is 10.4 nmol/L; 500 ng/dL is 17.3 nmol/L; 1000 ng/dL is 34.7 nmol/L. The factor is not arbitrary — it comes from the molar mass, because testosterone has a molar mass of 288.43 g/mol, and that is why every analyte has its own factor rather than one shared conversion. The two systems differ by roughly a factor of 29, which is large enough that the numbers can never be confused — but note this is *total* testosterone. Free testosterone is a different measurement reported in pg/mL or pmol/L, with its own factor, and the two are not interchangeable however carefully the units are converted. This converts units. It does not interpret results, does not compare your value against a reference interval, and is not a substitute for the clinician who ordered the test — reference intervals differ between laboratories, methods and populations.