TIBC unit converter
Convert TIBC 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 (TIBC is expressed as the amount of iron (Fe, atomic weight 55.84 g/mol) that the transferrin in the sample can bind. 1 µmol/L = 5.584 µg/dL (labs use 5.585).). 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 |
| 200 | 35.8 |
| 250 | 44.8 |
| 300 | 53.7 |
| 400 | 71.6 |
| 450 | 80.6 |
| 500 | 89.5 |
| 600 | 107.4 |
| 700 | 125.3 |
| 800 | 143.2 |
| 900 | 161.1 |
Usual ranges in each unit
What labs print as the reference range, by who was tested. Sources for each range are on the TIBC page.
| Who | µg/dL | µmol/L |
|---|---|---|
| 18+ | 250–450 | 44.8–80.6 |
| 0.25–17 | 250–400 | 44.8–71.6 |
| under 0.25 | 59–175 | 10.6–31.3 |