27 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 - 27 nM and 27 nmol/L mean exactly the same thing.
Common nmol/L Values
Same value, converted for every molecule
| Molecule | MW (g/mol) | 27 nmol/L in ng/mL |
|---|---|---|
| Vitamin D (25-Hydroxyvitamin D) | 400.64 | 10.81728 ng/mL |
| Testosterone | 288.42 | 7.78734 ng/mL |
| Estradiol (E2) | 272.38 | 7.35426 ng/mL |
| Cortisol | 362.46 | 9.78642 ng/mL |
| Progesterone | 314.47 | 8.49069 ng/mL |
| Vitamin A (Retinol) | 286.45 | 7.73415 ng/mL |
| Vitamin E (Alpha-Tocopherol) | 430.71 | 11.62917 ng/mL |
| Aldosterone | 360.45 | 9.73215 ng/mL |
| Dehydroepiandrosterone (DHEA) | 288.42 | 7.78734 ng/mL |
| DHEA-Sulfate (DHEA-S) | 368.49 | 9.94923 ng/mL |
| Vitamin B12 (Cobalamin) | 1355.4 | 36.5958 ng/mL |
| Folate (Folic Acid) | 441.4 | 11.9178 ng/mL |
| Melatonin | 232.28 | 6.27156 ng/mL |
| Thyroxine (T4) | 776.87 | 20.97549 ng/mL |
| Triiodothyronine (T3) | 651.01 | 17.57727 ng/mL |
| Androstenedione | 286.41 | 7.73307 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.
Some labs report Vitamin D in nmol/L, others in ng/mL – and the two aren’t the same number. This walks through converting 27 nmol/L step by step.
Step 1: Multiply 27 nmol/L by the molecular weight of Vitamin D, 400.64 g/mol: 27 × 400.64 = 10817.28.
Step 2: Divide that result by 1000 to convert nanomoles to nanograms: 10817.28 ÷ 1000 = 10.81728.
27 nmol/L converts to 10.81728 ng/mL. The calculator above will do the same math automatically for any value you enter.
