28 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 - 28 nM and 28 nmol/L mean exactly the same thing.
Common nmol/L Values
Same value, converted for every molecule
| Molecule | MW (g/mol) | 28 nmol/L in ng/mL |
|---|---|---|
| Vitamin D (25-Hydroxyvitamin D) | 400.64 | 11.21792 ng/mL |
| Testosterone | 288.42 | 8.07576 ng/mL |
| Estradiol (E2) | 272.38 | 7.62664 ng/mL |
| Cortisol | 362.46 | 10.14888 ng/mL |
| Progesterone | 314.47 | 8.80516 ng/mL |
| Vitamin A (Retinol) | 286.45 | 8.0206 ng/mL |
| Vitamin E (Alpha-Tocopherol) | 430.71 | 12.05988 ng/mL |
| Aldosterone | 360.45 | 10.0926 ng/mL |
| Dehydroepiandrosterone (DHEA) | 288.42 | 8.07576 ng/mL |
| DHEA-Sulfate (DHEA-S) | 368.49 | 10.31772 ng/mL |
| Vitamin B12 (Cobalamin) | 1355.4 | 37.9512 ng/mL |
| Folate (Folic Acid) | 441.4 | 12.3592 ng/mL |
| Melatonin | 232.28 | 6.50384 ng/mL |
| Thyroxine (T4) | 776.87 | 21.75236 ng/mL |
| Triiodothyronine (T3) | 651.01 | 18.22828 ng/mL |
| Androstenedione | 286.41 | 8.01948 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.
Turning 28 nmol/L into ng/mL takes just two steps once you have the molecular weight of Vitamin D on hand. Here’s the full breakdown.
1) Multiply 28 nmol/L by the molecular weight of Vitamin D, 400.64 g/mol: 28 × 400.64 = 11217.92.
2) Divide that result by 1000 to convert nanomoles to nanograms: 11217.92 ÷ 1000 = 11.21792.
In short, 28 nmol/L is 11.21792 ng/mL. Try a different number in the calculator above to see it recalculate live.
