UIBC unit converter
Convert UIBC between µg/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 µg/dL = 0.1791 µmol/L. Nothing you type here leaves your browser.
The conversion
- 1 µg/dL = 0.1791 µmol/LFrom µg/dL to µmol/L: divide by 5.585. Back again: multiply by 5.585.
Mass and molar units are linked by the molecular weight: 55.84 g/mol (UIBC is expressed as the amount of iron (Fe, atomic weight 55.84 g/mol) that the empty binding sites on transferrin could still take up. 1 µmol/L = 5.584 µg/dL (labs use 5.585), the same factor as TIBC.). Source: PubChem (NIH).
Common values
From zero to about twice the usual upper limit, plus the usual limits themselves.
| µg/dL | µmol/L |
|---|---|
| 100 | 17.9 |
| 111 | 19.9 |
| 131 | 23.5 |
| 200 | 35.8 |
| 300 | 53.7 |
| 343 | 61.4 |
| 400 | 71.6 |
| 425 | 76.1 |
| 500 | 89.5 |
| 600 | 107.4 |
| 700 | 125.3 |
| 800 | 143.2 |
Usual ranges in each unit
What labs print as the reference range, by who was tested. Sources for each range are on the UIBC page.
| Who | µg/dL | µmol/L |
|---|---|---|
| Men, 18–60 | 111–343 | 19.9–61.4 |
| Women, 18–60 | 131–425 | 23.5–76.1 |
| Men, 0.58–17 | 148–395 | 26.5–70.7 |
| Women, 0.58–17 | 131–425 | 23.5–76.1 |
| 0.085–-0.42000000000000004 | 127–340 | 22.7–60.9 |