Urine & CSF

Phosphate (24-h urine) unit converter

Phosphate excreted in 24-hour urine (mineral metabolism workup)

Also known as: Urine phosphorus

Converter

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

mmol/24 h mg/24 h

Worked example

32.5 mmol/24 h (middle of the reference range) = 1 007 mg/24 h

Conversion formulas

mg/24 h	mg/24 h = mmol/24 h × 30.97	mmol/24 h = mg/24 h × 0.03229

Reference range

Unit	Adults
mmol/24 h	15 – 50
mg/24 h	464.5 – 1548

Source: Newcastle Hospitals Laboratories: Phosphate, urine · Last reviewed: 2026-10-19

Note from the source: Adults 15-50 mmol/24 h (Newcastle Hospitals Laboratories); depends on diet

Frequently asked questions

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

mg/24 h = mmol/24 h × 30.97. In the other direction: mmol/24 h = mg/24 h × 0.03229.

What is the reference range of Phosphate (24-h urine)?

For adults the range is 15 – 50 mmol/24 h (Newcastle Hospitals Laboratories: Phosphate, urine). Reference ranges differ between laboratories and partly by sex and age; use the range printed on your lab report.

Which units are used for Phosphate (24-h urine)?

Common units are mmol/24 h, mg/24 h.