Urine Lead (24h) unit converter

Convert urine lead (24h) between µg/24 h, µmol/24 h and nmol/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 µg/24 h = 0.0048 µmol/24 h. Nothing you type here leaves your browser.

The conversion

1 µg/24 h = 0.004826 µmol/24 hFrom µg/24 h to µmol/24 h: divide by 207.2. Back again: multiply by 207.2.
1 µg/24 h = 4.826 nmol/24 hFrom µg/24 h to nmol/24 h: multiply by 4.826. Back again: divide by 4.826.

Mass and molar units are linked by the molecular weight: 207.2 g/mol (Elemental lead (Pb), standard atomic weight 207.2 (PubChem rounds to 207)). Source: PubChem (National Library of Medicine).

Common values

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

Urine Lead (24h) values in µg/24 h, µmol/24 h and nmol/24 h
µg/24 h	µmol/24 h	nmol/24 h
2	0.01	10
4	0.019	19
6	0.029	29
8	0.039	39
8.1	0.039	39
10	0.048	48
12	0.058	58
14	0.068	68
16	0.077	77

Usual ranges in each unit

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

Usual ranges for Urine Lead (24h) in µg/24 h, µmol/24 h and nmol/24 h
Who	µg/24 h	µmol/24 h	nmol/24 h
Adults	up to 8.1	up to 0.039	up to 39