HEALTH CALCULATORS
Testosterone Unit Converter
Instantly convert total testosterone between ng/dL and nmol/L, and free testosterone between pg/mL, pmol/L, and ng/dL.
Total Testosterone
Type in either box. The other converts instantly.
Free Testosterone
Type in any box. The others convert instantly.
Quick Reference: Total Testosterone
| ng/dL | nmol/L |
|---|---|
| 200 ng/dL | 6.9 nmol/L |
| 264 ng/dL | 9.2 nmol/L |
| 300 ng/dL | 10.4 nmol/L |
| 350 ng/dL | 12.1 nmol/L |
| 400 ng/dL | 13.9 nmol/L |
| 500 ng/dL | 17.3 nmol/L |
| 600 ng/dL | 20.8 nmol/L |
| 700 ng/dL | 24.3 nmol/L |
| 800 ng/dL | 27.7 nmol/L |
| 900 ng/dL | 31.2 nmol/L |
| 1000 ng/dL | 34.7 nmol/L |
Conversion factors: 1 nmol/L = 28.84 ng/dL; free testosterone 1 pg/mL = 3.467 pmol/L = 0.1 ng/dL.
For educational purposes only. This calculator does not diagnose any condition or replace an evaluation by a licensed healthcare Provider. Always review your results with your Provider.
Why Testosterone Units Are Confusing
Labs in the United States usually report total testosterone in ng/dL, while labs in Canada, Europe, and most research studies use nmol/L. Free testosterone adds another layer, since it may be reported in pg/mL, pmol/L, or ng/dL. Comparing results across labs, countries, or studies means converting them to the same unit first.
How the Conversion Works
The conversion is based on the molecular weight of testosterone (about 288.4 g/mol). One nmol/L of total testosterone equals 28.84 ng/dL. For free testosterone, 1 pg/mL equals 3.467 pmol/L, which also equals 0.1 ng/dL.
Want to know your free testosterone? Use our Free Testosterone Calculator.
FAQ
Conversion Questions.
How do I convert ng/dL to nmol/L?
Divide by 28.84. For example, 500 ng/dL ÷ 28.84 = 17.3 nmol/L.
How do I convert nmol/L to ng/dL?
Multiply by 28.84. For example, 12 nmol/L × 28.84 = 346 ng/dL.
How do I convert free testosterone from pg/mL to pmol/L?
Multiply by 3.467. For example, 100 pg/mL × 3.467 = 347 pmol/L.
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