About This Calculator
This calculator converts testosterone concentration between nanograms per deciliter (ng/dL) and nanomoles per liter (nmol/L), using the fixed molecular weight of testosterone (288.42 g/mol). It’s ideal for standardizing lab values across US and SI units.
How It Works
- Select the conversion direction: ng/dL to nmol/L or nmol/L to ng/dL.
- Enter the testosterone value to convert.
- The following formulas are applied:
nmol/L = ng/dL ÷ 28.84
ng/dL = nmol/L × 28.84
Note: The conversion factor is based on testosterone’s molecular weight of 288.42 g/mol.
Testosterone Conversion Table
| ng/dL | nmol/L |
|---|---|
| 100 ng/dL | 3.47 nmol/L |
| 200 ng/dL | 6.94 nmol/L |
| 300 ng/dL | 10.41 nmol/L |
| 400 ng/dL | 13.88 nmol/L |
| 500 ng/dL | 17.35 nmol/L |
| 700 ng/dL | 24.29 nmol/L |
Frequently Asked Questions
What is the conversion factor?
1 ng/dL = 0.0347 nmol/L, or more precisely, 1 nmol/L = 28.84 ng/dL.
Can I convert both ways?
Yes. Use the toggle to switch between ng/dL and nmol/L directions.
Is this formula valid for all hormones?
No. It is specific to testosterone due to its molecular weight. Other hormones require different factors.
Why convert testosterone units?
Some labs report in SI units (nmol/L), others in conventional US units (ng/dL). This ensures consistency across systems.
Is this clinically accurate?
Yes. The calculation is based on molecular chemistry and is widely used in endocrinology labs.