Direct bilirubin unit converter
Convert direct bilirubin between mg/dL and µmol/L. Type in either box. The factors come from our catalog and are checked by code.
AI-verified against cited sources. Awaiting expert reviewLast reviewed 2026-10-03
1 mg/dL = 17.1028 µmol/L. Nothing you type here leaves your browser.
The conversion
- 1 mg/dL = 17.1 µmol/LFrom mg/dL to µmol/L: multiply by 17.1. Back again: divide by 17.1.
Mass and molar units are linked by the molecular weight: 584.7 g/mol (bilirubin, C33H36N4O6 (PubChem CID 5280352). Labs apply the same conversion to the direct (conjugated) fraction.). Source: PubChem, National Library of Medicine.
Common values
From zero to about twice the usual upper limit, plus the usual limits themselves.
| mg/dL | µmol/L |
|---|---|
| 0.1 | 1.7 |
| 0.2 | 3.4 |
| 0.3 | 5.1 |
| 0.4 | 6.8 |
| 0.5 | 8.6 |
| 0.6 | 10.3 |
| 0.7 | 12 |
| 0.8 | 13.7 |
Usual ranges in each unit
What labs print as the reference range, by who was tested. Sources for each range are on the Direct bilirubin page.
| Who | mg/dL | µmol/L |
|---|---|---|
| 18+ | 0–0.4 | 0–6.8 |
| 1–17 | 0–0.4 | 0–6.8 |