Arsenic (urine) unit converter
Convert arsenic (urine) between µg/L, nmol/L and µmol/L. 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
1 µg/L = 13.3476 nmol/L. Nothing you type here leaves your browser.
The conversion
- 1 µg/L = 13.35 nmol/LFrom µg/L to nmol/L: multiply by 13.35. Back again: divide by 13.35.
- 1 µg/L = 0.01335 µmol/LFrom µg/L to µmol/L: divide by 74.92. Back again: multiply by 74.92.
µg/L and ng/mL give the same number.
Mass and molar units are linked by the molecular weight: 74.922 g/mol (arsenic (As), atomic mass. PubChem lists 74.92159.). Source: PubChem, National Library of Medicine.
Common values
From zero to about twice the usual upper limit, plus the usual limits themselves.
| µg/Lsame as ng/mL | nmol/L | µmol/L |
|---|---|---|
| 10 | 133 | 0.133 |
| 20 | 267 | 0.267 |
| 30 | 400 | 0.4 |
| 35 | 467 | 0.467 |
| 40 | 534 | 0.534 |
| 50 | 667 | 0.667 |
| 60 | 801 | 0.801 |
| 70 | 934 | 0.934 |
Usual ranges in each unit
What labs print as the reference range, by who was tested. Sources for each range are on the Arsenic (urine) page.
| Who | µg/L | nmol/L | µmol/L |
|---|---|---|---|
| Adults | up to 35 | up to 467 | up to 0.467 |