HDL unit converter
Convert HDL between mg/dL, mmol/L and g/L. Type in either box. The factors come from our catalog and are checked by code.
AI-drafted. Awaiting verificationLast reviewed 2026-10-03
1 mg/dL = 0.0259 mmol/L. Nothing you type here leaves your browser.
The conversion
- 1 mg/dL = 0.02586 mmol/LFrom mg/dL to mmol/L: divide by 38.67. Back again: multiply by 38.67.
- 1 mg/dL = 0.01 g/LFrom mg/dL to g/L: divide by 100. Back again: multiply by 100.
Mass and molar units are linked by the molecular weight: 386.7 g/mol (cholesterol, C27H46O (PubChem)). Source: PubChem, National Library of Medicine.
Common values
From zero to about twice the usual upper limit, plus the usual limits themselves.
| mg/dL | mmol/L | g/L |
|---|---|---|
| 20 | 0.52 | 0.2 |
| 40 | 1.03 | 0.4 |
| 45 | 1.16 | 0.45 |
| 50 | 1.29 | 0.5 |
| 60 | 1.55 | 0.6 |
| 80 | 2.07 | 0.8 |
| 100 | 2.59 | 1 |
| 120 | 3.1 | 1.2 |
Usual ranges in each unit
What labs print as the reference range, by who was tested. Sources for each range are on the HDL page.
| Who | mg/dL | mmol/L | g/L |
|---|---|---|---|
| 19+ | 40 and above | 1.03 and above | 0.4 and above |
| 2–18 | 45 and above | 1.16 and above | 0.45 and above |