200 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 - 200 nM and 200 nmol/L mean exactly the same thing.
Common nmol/L Values
Same value, converted for every molecule
| Molecule | MW (g/mol) | 200 nmol/L in ng/mL |
|---|---|---|
| Vitamin D (25-Hydroxyvitamin D) | 400.64 | 80.128 ng/mL |
| Testosterone | 288.42 | 57.684 ng/mL |
| Estradiol (E2) | 272.38 | 54.476 ng/mL |
| Cortisol | 362.46 | 72.492 ng/mL |
| Progesterone | 314.47 | 62.894 ng/mL |
| Vitamin A (Retinol) | 286.45 | 57.29 ng/mL |
| Vitamin E (Alpha-Tocopherol) | 430.71 | 86.142 ng/mL |
| Aldosterone | 360.45 | 72.09 ng/mL |
| Dehydroepiandrosterone (DHEA) | 288.42 | 57.684 ng/mL |
| DHEA-Sulfate (DHEA-S) | 368.49 | 73.698 ng/mL |
| Vitamin B12 (Cobalamin) | 1355.4 | 271.08 ng/mL |
| Folate (Folic Acid) | 441.4 | 88.28 ng/mL |
| Melatonin | 232.28 | 46.456 ng/mL |
| Thyroxine (T4) | 776.87 | 155.374 ng/mL |
| Triiodothyronine (T3) | 651.01 | 130.202 ng/mL |
| Androstenedione | 286.41 | 57.282 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.
Molar units like nmol/L and mass units like ng/mL aren’t interchangeable without a conversion factor. For Vitamin D, that factor comes from its molecular weight – here’s how it plays out for 200 nmol/L.
-> Multiply 200 nmol/L by the molecular weight of Vitamin D, 400.64 g/mol: 200 × 400.64 = 80128.
-> Divide that result by 1000 to convert nanomoles to nanograms: 80128 ÷ 1000 = 80.128.
200 nmol/L converts to 80.128 ng/mL. The calculator above will do the same math automatically for any value you enter.
