1.6 nmol/L to ng/mL Converter
Convert any lab value from nmol/L to ng/mL (or back) for 16 hormones and vitamins - pick the molecule below and this calculator uses its exact molecular weight. Also written "nM" or "nmol/l" on some lab reports - 1.6 nM and 1.6 nmol/L mean exactly the same thing.
Common nmol/L Values
Same value, converted for every molecule
| Molecule | MW (g/mol) | 1.6 nmol/L in ng/mL |
|---|---|---|
| Vitamin D (25-Hydroxyvitamin D) | 400.64 | 0.641024 ng/mL |
| Testosterone | 288.42 | 0.461472 ng/mL |
| Estradiol (E2) | 272.38 | 0.435808 ng/mL |
| Cortisol | 362.46 | 0.579936 ng/mL |
| Progesterone | 314.47 | 0.503152 ng/mL |
| Vitamin A (Retinol) | 286.45 | 0.45832 ng/mL |
| Vitamin E (Alpha-Tocopherol) | 430.71 | 0.689136 ng/mL |
| Aldosterone | 360.45 | 0.57672 ng/mL |
| Dehydroepiandrosterone (DHEA) | 288.42 | 0.461472 ng/mL |
| DHEA-Sulfate (DHEA-S) | 368.49 | 0.589584 ng/mL |
| Vitamin B12 (Cobalamin) | 1355.4 | 2.16864 ng/mL |
| Folate (Folic Acid) | 441.4 | 0.70624 ng/mL |
| Melatonin | 232.28 | 0.371648 ng/mL |
| Thyroxine (T4) | 776.87 | 1.242992 ng/mL |
| Triiodothyronine (T3) | 651.01 | 1.041616 ng/mL |
| Androstenedione | 286.41 | 0.458256 ng/mL |
Each row uses the same value entered above, converted with that molecule's own molecular weight. Custom molecular weight isn't included here since it has no fixed value of its own.
Lab results for Vitamin D sometimes come back in nmol/L instead of ng/mL, which makes it hard to compare against a ng/mL reference range. Here’s how 1.6 nmol/L becomes ng/mL.
-> Multiply 1.6 nmol/L by the molecular weight of Vitamin D, 400.64 g/mol: 1.6 × 400.64 = 641.024.
-> Divide that result by 1000 to convert nanomoles to nanograms: 641.024 ÷ 1000 = 0.641024.
1.6 nmol/L converts to 0.641024 ng/mL. The calculator above will do the same math automatically for any value you enter.
