Bilirubin conversion: mg/dL to µmol/L
For bilirubin, 1 mg/dL = 17.1036 µmol/L, and 1 µmol/L = 0.0584673 mg/dL.
Common values
mg/dL to µmol/L
| mg/dL | µmol/L |
|---|---|
| 0.2 | 3 |
| 0.3 | 5 |
| 0.5 | 9 |
| 1 | 17 |
| 1.2 | 21 |
| 1.5 | 26 |
| 2 | 34 |
| 3 | 51 |
| 5 | 86 |
| 10 | 171 |
| 15 | 257 |
| 20 | 342 |
µmol/L to mg/dL
| µmol/L | mg/dL |
|---|---|
| 3 | 0.2 |
| 5 | 0.3 |
| 10 | 0.6 |
| 15 | 0.9 |
| 20 | 1.2 |
| 25 | 1.5 |
| 30 | 1.8 |
| 50 | 2.9 |
| 100 | 5.8 |
| 200 | 11.7 |
| 300 | 17.5 |
| 400 | 23.4 |
Each converted value is worked out in full and then rounded: µmol/L to whole numbers and mg/dL to one decimal place.
Source: molar masses summed from the IUPAC CIAAW abridged standard atomic weights, 2024.
The values are facts and free to use; this table’s selection and presentation are © 2026 ScienceQuest.
Why the factor is specific to bilirubin
Bilirubin, C₃₃H₃₆N₄O₆, has a molar mass of 584.673 g/mol, summed from the standard atomic weights of its atoms. A result in mg/dL is a mass and one in µmol/L an amount of substance, so converting divides by the molar mass and multiplies by 10,000: 10 for the decilitres in a litre, times 1000 for the micromoles in a millimole: 1 mg/dL = 10,000 ÷ 584.673 = 17.1036 µmol/L.
A factor fits one analyte only: 1 mg/dL of creatinine is 88.4017 µmol/L, as the creatinine conversion table shows.
Total, direct and indirect bilirubin share the factor.
- µmol/L = mg/dL × 10,000 ÷ 584.673
- mg/dL = µmol/L × 584.673 ÷ 10,000
Which countries report which unit
American and Indian laboratories usually report bilirubin in mg/dL; British, Canadian and Australian ones report µmol/L.
Worked example
- 1 mg/dL in µmol/L
- = 1 × 10,000 ÷ 584.673
- = 17.1036 µmol/L