120 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 - 120 nM and 120 nmol/L mean exactly the same thing.
Common nmol/L Values
Same value, converted for every molecule
| Molecule | MW (g/mol) | 120 nmol/L in ng/mL |
|---|---|---|
| Vitamin D (25-Hydroxyvitamin D) | 400.64 | 48.0768 ng/mL |
| Testosterone | 288.42 | 34.6104 ng/mL |
| Estradiol (E2) | 272.38 | 32.6856 ng/mL |
| Cortisol | 362.46 | 43.4952 ng/mL |
| Progesterone | 314.47 | 37.7364 ng/mL |
| Vitamin A (Retinol) | 286.45 | 34.374 ng/mL |
| Vitamin E (Alpha-Tocopherol) | 430.71 | 51.6852 ng/mL |
| Aldosterone | 360.45 | 43.254 ng/mL |
| Dehydroepiandrosterone (DHEA) | 288.42 | 34.6104 ng/mL |
| DHEA-Sulfate (DHEA-S) | 368.49 | 44.2188 ng/mL |
| Vitamin B12 (Cobalamin) | 1355.4 | 162.648 ng/mL |
| Folate (Folic Acid) | 441.4 | 52.968 ng/mL |
| Melatonin | 232.28 | 27.8736 ng/mL |
| Thyroxine (T4) | 776.87 | 93.2244 ng/mL |
| Triiodothyronine (T3) | 651.01 | 78.1212 ng/mL |
| Androstenedione | 286.41 | 34.3692 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 120 nmol/L.
-> Multiply 120 nmol/L by the molecular weight of Vitamin D, 400.64 g/mol: 120 × 400.64 = 48076.8.
-> Divide that result by 1000 to convert nanomoles to nanograms: 48076.8 ÷ 1000 = 48.0768.
That gives a final answer of 48.0768 ng/mL for 120 nmol/L – the calculator above does this instantly for any other number.
