How to Convert nmol/L to ng/dL
ng/dL (mass) and nmol/L (molar) are related by the molecule's weight, so every hormone has its own factor: multiply nmol/L by the molecular weight divided by 10.
ng/dL = nmol/L × (molecular weight ÷ 10) ng/dL = nmol/L × 28.84 (MW 288.42) For the reverse direction, divide ng/dL by the same factor — see the dedicated ng/dL to nmol/L calculator.
Testosterone nmol/L to ng/dL Chart
| nmol/L | ng/dL | Context |
|---|---|---|
| 1 nmol/L | 29 ng/dL | Low |
| 10 nmol/L | 288 ng/dL | Lower-normal (men) |
| 20 nmol/L | 577 ng/dL | Mid-normal (men) |
| 30 nmol/L | 865 ng/dL | Upper-normal (men) |
| 35 nmol/L | 1009 ng/dL | Upper limit (men) |
| 2 nmol/L | 58 ng/dL | Upper-normal (women) |
Conversion Factors by Hormone
| Hormone | Molecular weight | nmol/L × factor = ng/dL |
|---|---|---|
| Testosterone | 288.42 | × 28.84 |
| Cortisol | 362.46 | × 36.25 |
| Progesterone | 314.46 | × 31.45 |
| Estradiol (E2) | 272.38 | × 27.24 |
| Aldosterone | 360.44 | × 36.04 |
| Androstenedione | 286.4 | × 28.64 |
Testosterone Reference Ranges (ng/dL)
For adult men, total testosterone is roughly 264–916 ng/dL (9.2–31.8 nmol/L); adult women are much lower, about 15–70 ng/dL (0.5–2.4 nmol/L). For male and female ranges and the total-vs-free distinction, use the dedicated testosterone conversion calculator.
Frequently Asked Questions
How do you convert nmol/L to ng/dL?
Multiply nmol/L by (molecular weight ÷ 10). For testosterone that is ×28.84.
What is 20 nmol/L testosterone in ng/dL?
About 577 ng/dL.
Why does the factor change by hormone?
It depends on molecular weight, which differs for each hormone.
What is a normal testosterone in ng/dL?
Roughly 264–916 ng/dL for adult men.
References
- Mass-to-molar relationship: ng/dL = nmol/L × (MW ÷ 10); testosterone MW 288.42.
Conclusion
Converting nmol/L to ng/dL depends on the hormone — pick yours above for an exact, molecular-weight-based result. Testosterone is ×28.84. Compare the result against sex-specific reference ranges with your clinician.