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Urine & CSF

Magnesium (24-h urine): convert mg/24 h to mmol/24 h

mmol/24 h = mg/24 h × 0.04114

Calculator

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

Conversion formulas

mg/24 h → mmol/24 hmmol/24 h = mg/24 h × 0.04114
mmol/24 h → mg/24 hmg/24 h = mmol/24 h × 24.31

Conversion table

Highlighted: values inside the adult reference range.

mg/24 hmmol/24 h
200.8228
401.646
602.468
803.291
1004.114
1204.937
1405.76
1606.582
1807.405
2008.228
2209.051
2409.874
26010.7
28011.52
30012.34
32013.16

Reference range

58.34 – 158 mg/24 h = 2.4 – 6.5 mmol/24 h

Source: Severn Pathology (North Bristol NHS Trust): Magnesium (24-hour urine) · Last reviewed: 2026-10-19

Frequently asked questions

How do I convert Magnesium (24-h urine) from mg/24 h to mmol/24 h?

mmol/24 h = mg/24 h × 0.04114. For example, 100 mg/24 h equals 4.11 mmol/24 h.

How many mmol/24 h are 100 mg/24 h?

100 mg/24 h equal 4.11 mmol/24 h (Magnesium (24-h urine)).

How do I convert Magnesium (24-h urine) from mmol/24 h back to mg/24 h?

mg/24 h = mmol/24 h × 24.31.

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