Urine & CSF
Potassium (spot urine): convert mmol/L to mg/dL
mg/dL = mmol/L × 3.91
Calculator
Enter a value in any unit and all other units fill in.
Conversion formulas
| mmol/L → mg/dL | mg/dL = mmol/L × 3.91 |
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| mg/dL → mmol/L | mmol/L = mg/dL × 0.2558 |
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Conversion table
| mmol/L | mg/dL |
|---|
| 1 | 3.91 |
| 2 | 7.82 |
| 5 | 19.55 |
| 10 | 39.1 |
| 20 | 78.2 |
| 50 | 195.5 |
| 100 | 391 |
Source: PubChem: periodic table element data · Last reviewed: 2026-10-19
Frequently asked questions
How do I convert Potassium (spot urine) from mmol/L to mg/dL?
mg/dL = mmol/L × 3.91. For example, 10 mmol/L equals 39.1 mg/dL.
How many mg/dL are 10 mmol/L?
10 mmol/L equal 39.1 mg/dL (Potassium (spot urine)).
How do I convert Potassium (spot urine) from mg/dL back to mmol/L?
mmol/L = mg/dL × 0.2558.