300 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 - 300 nM and 300 nmol/L mean exactly the same thing.
Common nmol/L Values
Same value, converted for every molecule
| Molecule | MW (g/mol) | 300 nmol/L in ng/mL |
|---|---|---|
| Vitamin D (25-Hydroxyvitamin D) | 400.64 | 120.192 ng/mL |
| Testosterone | 288.42 | 86.526 ng/mL |
| Estradiol (E2) | 272.38 | 81.714 ng/mL |
| Cortisol | 362.46 | 108.738 ng/mL |
| Progesterone | 314.47 | 94.341 ng/mL |
| Vitamin A (Retinol) | 286.45 | 85.935 ng/mL |
| Vitamin E (Alpha-Tocopherol) | 430.71 | 129.213 ng/mL |
| Aldosterone | 360.45 | 108.135 ng/mL |
| Dehydroepiandrosterone (DHEA) | 288.42 | 86.526 ng/mL |
| DHEA-Sulfate (DHEA-S) | 368.49 | 110.547 ng/mL |
| Vitamin B12 (Cobalamin) | 1355.4 | 406.62 ng/mL |
| Folate (Folic Acid) | 441.4 | 132.42 ng/mL |
| Melatonin | 232.28 | 69.684 ng/mL |
| Thyroxine (T4) | 776.87 | 233.061 ng/mL |
| Triiodothyronine (T3) | 651.01 | 195.303 ng/mL |
| Androstenedione | 286.41 | 85.923 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 300 nmol/L becomes ng/mL.
-> Multiply 300 nmol/L by the molecular weight of Vitamin D, 400.64 g/mol: 300 × 400.64 = 120192.
-> Divide that result by 1000 to convert nanomoles to nanograms: 120192 ÷ 1000 = 120.192.
That gives a final answer of 120.192 ng/mL for 300 nmol/L – the calculator above does this instantly for any other number.
