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Electrolytes & minerals

Magnesium: convert mmol/L to mg/dL

mg/dL = mmol/L × 2.431

Calculator

Enter a value in any unit and all other units fill in.

Conversion formulas

mmol/L → mg/dLmg/dL = mmol/L × 2.431
mg/dL → mmol/Lmmol/L = mg/dL × 0.4114

Conversion table

Highlighted: values inside the adult reference range.

mmol/Lmg/dL
0.20.4861
0.40.9723
0.61.458
0.81.945
12.431
1.22.917
1.43.403
1.63.889
1.84.375
24.861
2.25.348
2.45.834

Reference range

0.7 – 1 mmol/L = 1.702 – 2.431 mg/dL

Source: Pathology Harmony Group (ACB, IBMS, RCPath): Agreed Adult Clinical Biochemistry Reference Intervals, January 2011 · Last reviewed: 2026-10-14

Frequently asked questions

How do I convert Magnesium from mmol/L to mg/dL?

mg/dL = mmol/L × 2.431. For example, 0.8 mmol/L equals 1.94 mg/dL.

How many mg/dL are 0.8 mmol/L?

0.8 mmol/L equal 1.94 mg/dL (Magnesium).

How do I convert Magnesium from mg/dL back to mmol/L?

mmol/L = mg/dL × 0.4114.

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