Testosterone Unit Converter (ng/dL ↔ nmol/L)
Convert testosterone between ng/dL and nmol/L in either direction. Enter a value and the result updates instantly. This page performs unit conversion and cites where the factor and the reference intervals come from; it does not interpret your value.
The testosterone conversion factor and where it comes from
Testosterone is the principal androgen, measured as total testosterone on a hormone panel. Total testosterone is reported in ng/dL on U.S. lab reports and in nmol/L on UK, Canadian, Australian, and most European reports.
The standard conversion factor for testosterone is 0.03467, applied as ng/dL × 0.03467 = nmol/L (and nmol/L ÷ 0.03467 = ng/dL in reverse). Total testosterone is reported in ng/dL (conventional) and nmol/L (SI); with a molecular weight of 288.42 g/mol the conversion factor is 0.03467. Source: AMA Manual of Style / UK Kidney Association SI conversion table.
Published reference intervals
The intervals below are reproduced from U.S. National Library of Medicine, MedlinePlus: Testosterone levels test. They are listed here for unit reference only. Whether any value is in range for you depends on your laboratory's own reference range and your clinical context, so read them alongside your report and your healthcare provider, not in place of either.
| Category | ng/dL | nmol/L |
|---|---|---|
| Typical reference: adult men | Roughly 280-1100 ng/dL | Roughly 9.7-38.1 nmol/L |
| Typical reference: adult women | Roughly 15-70 ng/dL | Roughly 0.5-2.4 nmol/L |
Reference ranges vary widely by laboratory, assay, age, and time of day; the values above are representative adult ranges. Confirm against your own report.
Common questions
How do I convert testosterone from ng/dL to nmol/L?
Multiply by 0.03467: ng/dL × 0.03467 = nmol/L. To go the other way, divide by 0.03467 (or multiply by 28.84).
What is the testosterone conversion factor?
0.03467. Total testosterone is reported in ng/dL (conventional) and nmol/L (SI); with a molecular weight of 288.42 g/mol the conversion factor is 0.03467.
Where is ng/dL used and where is nmol/L used?
Total testosterone is reported in ng/dL on U.S. lab reports and in nmol/L on UK, Canadian, Australian, and most European reports.
Related converters and reference
- Full blood test unit converter: 60+ biomarkers, any value, either direction.
- nmol/L to mg/dL by substance: the molar-to-mass conversion depends on which substance you measured.
- HbA1c to average glucose (eAG) converter.
Track testosterone over time, in either unit system
Health3 imports lab values, converts units automatically, and charts the trend. Free.