Testosterone nmol/L → ng/dL
Convert testosterone from nmol/L to ng/dL
Sources last checked: 2026-11-03
Testosterone nmol/L → ng/dL
Convert testosterone from nmol/L to ng/dL
Converts units only; reference ranges depend on the laboratory, the assay and the patient.
What is the Testosterone nmol/L → ng/dL?
Many European laboratories and guidelines express total testosterone in nmol/L, while laboratories in the USA and Turkey report ng/dL. This converter divides by 0.03467 (about × 28.84), the factor derived from the molar mass of testosterone (288.4 g/mol). The result refers to total testosterone, i.e. the sum of SHBG-bound, albumin-bound and free hormone.
When to use it
- Translating a nmol/L result into ng/dL for comparison with US literature
- Comparing results between laboratories that use different units
- Checking a value from a European report against your own laboratory's ng/dL report
- Teaching and exam preparation
When not to use it
- When your laboratory reports ng/mL — divide the ng/dL result by 100 to get ng/mL
- Free testosterone, usually reported in pmol/L or pg/mL — a different measurement, not total testosterone in another unit
- Comparing immunoassay results at low concentrations with LC-MS/MS values as if they were equivalent
How it is calculated
Testosterone (ng/dL) = testosterone (nmol/L) ÷ 0.03467
Clinical pearls and limitations
- Converts units only; reference ranges depend on the laboratory, the assay and the patient.
- 1 nmol/L ≈ 28.84 ng/dL; 15 nmol/L ≈ 433 ng/dL.
- Round ng/dL to whole numbers.
- Total testosterone depends on SHBG; obesity, ageing, liver disease and thyroid status alter SHBG and therefore the total value.
- Reference ranges and treatment thresholds depend on assay, sex, age and guideline; confirm low results with a repeat morning sample as guidelines recommend.
Frequently asked questions
How do I convert testosterone from nmol/L to ng/dL?
Divide by 0.03467. For example, 15 nmol/L ÷ 0.03467 = 433 ng/dL and 2.5 nmol/L ÷ 0.03467 = 72 ng/dL.
What is 1 nmol/L of testosterone in ng/dL?
About 28.84 ng/dL, from testosterone's molar mass of 288.4 g/mol.
What is the difference between total and free testosterone?
Total testosterone includes hormone bound to SHBG and albumin; free testosterone is the small unbound fraction. They have different units and reference ranges and are not converted into one another with this factor.
Evidence and guidelines
Have a follow-up question?
Medelix answers clinical questions from current guidelines and studies — every statement with its source.
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<p><a href="https://medelix.ai/en/calculators/testosterone-nmol-l-to-ng-dl">Testosterone nmol/L → ng/dL calculator by Medelix</a></p>For healthcare professionals and medical students. These tools support, and do not replace, clinical judgement. Always check results against the original source and your local protocols.