Potassium: convert mg/dL to mmol/L
mmol/L = mg/dL × 0.2558
Calculator
Enter a value in any unit and all other units fill in.
Conversion formulas
| mg/dL → mmol/L | mmol/L = mg/dL × 0.2558 |
|---|---|
| mmol/L → mg/dL | mg/dL = mmol/L × 3.909 |
Conversion table
Highlighted: values inside the adult reference range.
| mg/dL | mmol/L |
|---|---|
| 5 | 1.279 |
| 10 | 2.558 |
| 15 | 3.837 |
| 20 | 5.116 |
| 25 | 6.395 |
| 30 | 7.674 |
| 35 | 8.953 |
| 40 | 10.23 |
| 45 | 11.51 |
| 50 | 12.79 |
Reference range
13.68 – 20.72 mg/dL = 3.5 – 5.3 mmol/L
Source: Pathology Harmony Group (ACB, IBMS, RCPath): Agreed Adult Clinical Biochemistry Reference Intervals, January 2011 · Last reviewed: 2026-10-14