Urine Potassium 24h unit converter

Convert urine potassium 24h between mmol/24 h and mg/24 h. Type in either box. The factors come from our catalog and are checked by code.

AI-verified against cited sources. Awaiting expert reviewLast reviewed 2026-10-03

From

1 mmol/24 h = 39.0976 mg/24 h. Nothing you type here leaves your browser.

The conversion

1 mmol/24 h = 39.1 mg/24 hFrom mmol/24 h to mg/24 h: multiply by 39.1. Back again: divide by 39.1.

mmol/24 h and mEq/24 h give the same number.

Mass and molar units are linked by the molecular weight: 39.098 g/mol (potassium cation (K+), atomic weight per PubChem CID 813. One mmol of potassium is 39.10 mg, and 1 mEq equals 1 mmol for potassium.).

Common values

From zero to about twice the usual upper limit, plus the usual limits themselves.

Urine Potassium 24h values in mmol/24 h and mg/24 h
mmol/24 hsame as mEq/24 h	mg/24 h
25	977
50	1,955
75	2,932
100	3,910
125	4,887
150	5,865
175	6,842
200	7,820
225	8,797
250	9,774

Usual ranges in each unit

What labs print as the reference range, by who was tested. Sources for each range are on the Urine Potassium 24h page.

Usual ranges for Urine Potassium 24h in mmol/24 h and mg/24 h
Who	mmol/24 h	mg/24 h
18+	25–125	977–4,887