Electrolyte Conversion Calculator
Convert between mmol, mEq, and mg for electrolyte therapy
Critical Care
Electrolyte Conversion
Electrolyte Selection
Conversion Type
Common Electrolyte Doses
Conversion Result
100 mmol =
Enter Values
Sodium (Na⁺)
MW: 22.99 g/mol | Valence: 1
Common Salt Forms
NaClSalt form
NaHCO₃Salt form
Conversion Formulas
mmol → mg
mg = mmol × Molecular Weight
mEq → mg
mg = mEq × (MW ÷ Valence)
For monovalent ions
1 mmol = 1 mEq
Electrolyte Reference Table
| Electrolyte | Symbol | Molecular Weight | Valence | mEq per mmol | mg per mEq |
|---|---|---|---|---|---|
| Sodium (Na⁺) | Na | 22.99 | 1 | 1 | 22.99 |
| Potassium (K⁺) | K | 39.10 | 1 | 1 | 39.10 |
| Calcium (Ca²⁺) | Ca | 40.08 | 2 | 2 | 20.04 |
| Magnesium (Mg²⁺) | Mg | 24.31 | 2 | 2 | 12.15 |
| Chloride (Cl⁻) | Cl | 35.45 | 1 | 1 | 35.45 |
| Bicarbonate (HCO₃⁻) | HCO₃ | 61.02 | 1 | 1 | 61.02 |
| Phosphate (PO₄³⁻) | PO₄ | 94.97 | 3 | 3 | 31.66 |