Urine & CSF

Creatinine (24-h urine) unit converter

Creatinine excreted in 24-hour urine

Also known as: Urine creatinine 24 hour, 24-hour urine creatinine, Creatinine excretion, Kreatinin im Sammelurin

Converter

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

mmol/24 h mg/24 h

Worked example

11.05 mmol/24 h (middle of the reference range) = 1 250 mg/24 h

Conversion formulas

mg/24 h	mg/24 h = mmol/24 h × 113.1	mmol/24 h = mg/24 h × 0.00884

Good to know

Creatinine in 24-hour urine is reported in mmol/24 h or in mg/24 h (also g/24 h).

mg/24 h × 0.00884 = mmol/24 h; 1000 mg/24 h is 8.84 mmol/24 h.
Excretion depends on age and muscle mass, and it is often used to check whether a collection was complete.

Reference range

Unit	Adults
mmol/24 h	4.42 – 17.68
mg/24 h	500 – 2000

Source: MedlinePlus (NLM): Creatinine urine test · Last reviewed: 2026-10-17

Note from the source: 500-2000 mg/day (4.42-17.68 mmol/day); depends on age and lean body mass, about 14-26 mg/kg/day in men and 11-20 mg/kg/day in women (MedlinePlus)

Frequently asked questions

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

mg/24 h = mmol/24 h × 113.1. In the other direction: mmol/24 h = mg/24 h × 0.00884.

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

For adults the range is 4.42 – 17.68 mmol/24 h (MedlinePlus (NLM): Creatinine urine test). Reference ranges differ between laboratories and partly by sex and age; use the range printed on your lab report.

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

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