Convert testosterone from nmol/L to ng/dL and other serum units, with optional age- and sex-based reference range comparison for levels.

nmol/L to ng/dL Calculator

Enter a value, choose units, then calculate.

Testosterone
General Serum

Testosterone reference intervals

Test subjects ng/mL ng/dL nmol/L
Males 20-49 years 2.49-8.36 249-836 8.64-29.0
Males ≥ 50 years 1.93-7.40 193-740 6.68-25.7
Females 20-49 years 0.084-0.481 8.40-48.1 0.290-1.67
Females ≥ 50 years 0.029-0.408 2.90-40.8 0.101-1.42
Reference intervals vary by lab, method, sex, age, and clinical context.

Nmol/L to Ng/Dl Conversion Formula

The following formula is used to convert a concentration from nmol/L to ng/dL:

C(ng/dL) = (C(nmol/L) * MW(g/mol)) / 10

Variables:

  • C(ng/dL) is the concentration in nanograms per deciliter
  • C(nmol/L) is the concentration in nanomoles per liter
  • MW(g/mol) is the molecular weight of the substance in grams per mole

To convert the concentration from nmol/L to ng/dL, multiply the concentration in nmol/L by the molecular weight in g/mol and then divide by 10.

nmol/L to ng/dL Conversion Table (Testosterone, MW = 288.42 g/mol)
nmol/L ng/dL
0.12.884
0.25.768
0.38.653
0.514.421
128.842
257.684
2.572.105
386.526
4115.368
5144.210
7.5216.315
10288.420
12346.104
15432.630
20576.840
25721.050
30865.260
351009.470
401153.680
501442.100
* Rounded to 3 decimals. Formula: ng/dL = nmol/L × (MW/10). Example assumes Testosterone (MW 288.42 g/mol): 1 nmol/L ≈ 28.842 ng/dL.

What is Concentration Conversion?

Concentration conversion is the process of converting the concentration of a substance from one unit of measurement to another. This is often necessary when comparing results from different tests or when following specific guidelines that require a certain unit of measurement. The conversion takes into account the molecular weight of the substance, which is a constant that relates the mass of one mole of the substance to its amount in number of molecules.

How to Convert Nmol/L to Ng/Dl?

The following steps outline how to convert the concentration from nmol/L to ng/dL:

  1. First, determine the concentration in nmol/L.
  2. Next, determine the molecular weight of the substance in g/mol.
  3. Use the conversion formula: C(ng/dL) = (C(nmol/L) * MW(g/mol)) / 10.
  4. Finally, calculate the concentration in ng/dL.
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem:

Use the following variables as an example problem to test your knowledge.

Concentration (C(nmol/L)) = 50 nmol/L

Molecular Weight (MW(g/mol)) = 300 g/mol

Calculator Change Log:

  • 6/9/25 – Added a drop down selector for common substances that auto populates the molecular weight field. Still allows for custom entry.