Theophylline: convert mg/L to µmol/L
µmol/L = mg/L × 5.551
Calculator
Enter a value in any unit and all other units fill in.
Conversion formulas
| mg/L → µmol/L | µmol/L = mg/L × 5.551 |
|---|---|
| µmol/L → mg/L | mg/L = µmol/L × 0.1802 |
Conversion table
Highlighted: values inside the adult reference range.
| mg/L | µmol/L |
|---|---|
| 5 | 27.75 |
| 10 | 55.51 |
| 15 | 83.26 |
| 20 | 111 |
| 25 | 138.8 |
| 30 | 166.5 |
| 35 | 194.3 |
| 40 | 222 |
| 45 | 249.8 |
| 50 | 277.5 |
Reference range
10 – 20 mg/L = 55.51 – 111 µmol/L
Source: Pathology Harmony Group (ACB, IBMS, RCPath): Agreed Adult Clinical Biochemistry Reference Intervals, January 2011 · Last reviewed: 2026-10-14