Testosterone Unit Converter
About Testosterone Levels
Testosterone is a hormone involved in muscle mass, bone density, energy levels, and overall health. Lab results may be reported using different measurement units depending on location.
Typical adult male reference ranges (may vary by lab):
• ng/dL: ~300–1000
• nmol/L: ~10–35
This calculator is for informational purposes only and does not provide medical advice.
Frequently Asked Questions
What does this testosterone calculator do?
This calculator converts total testosterone values between
ng/dL and nmol/L, which are the two most common laboratory units.
What is considered a normal testosterone level?
Reference ranges vary by lab, age, and sex. For adult males,
common ranges are approximately 300–1000 ng/dL or 10–35 nmol/L.
Is this calculator a medical diagnosis?
No. This tool is for educational purposes only and does not
diagnose or treat any medical condition.
Why do some labs use nmol/L instead of ng/dL?
Many countries outside the United States use the metric-based
nmol/L unit, while ng/dL is more common in the U.S.