Urine & CSF

Urea (24-h urine) unit converter

Urea excreted in 24-hour urine (protein intake and catabolism)

Also known as: Urinary urea, Harnstoff im Urin, Urea urine 24h

Converter

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

g/24 h mmol/24 h

Worked example

570 mmol/24 h (middle of the reference range) = 34.2 g/24 h

Conversion formulas

g/24 h	g/24 h = mmol/24 h × 0.06006	mmol/24 h = g/24 h × 16.65

Good to know

Urea in 24-hour urine is reported in mmol/24 h or in g/24 h.

g/24 h × 16.65 = mmol/24 h (exact factor 16.65).
Values follow protein intake; do not mix this up with urea nitrogen, which counts only the nitrogen.

Reference range

Unit	Adults
g/24 h	25.83 – 42.64
mmol/24 h	430 – 710

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

Note from the source: Adults 430-710 mmol/24 h, about 26-43 g urea per 24 h (Newcastle Hospitals Laboratories). Depends strongly on protein intake; 24-hour collections must be complete

Frequently asked questions

How do I convert Urea (24-h urine) from mmol/24 h to g/24 h?

g/24 h = mmol/24 h × 0.06006. In the other direction: mmol/24 h = g/24 h × 16.65.

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

For adults the range is 430 – 710 mmol/24 h (Newcastle Hospitals Laboratories: Urea, 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 Urea (24-h urine)?

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