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Urine & CSF

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

mg/24 h = mmol/24 h × 24.31

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

Conversion formulas

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

Conversion table

Highlighted: values inside the adult reference range.

mmol/24 hmg/24 h
124.31
248.61
372.92
497.23
5121.5
6145.8
7170.2
8194.5
9218.8
10243.1
11267.4
12291.7
13316
14340.3
15364.6
16388.9

Reference range

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

mg/24 h = mmol/24 h × 24.31. For example, 4 mmol/24 h equals 97.2 mg/24 h.

How many mg/24 h are 4 mmol/24 h?

4 mmol/24 h equal 97.2 mg/24 h (Magnesium (24-h urine)).

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

mmol/24 h = mg/24 h × 0.04114.

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