Urea unit converter
Convert urea between mg/dL, mmol/L and g/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 mg/dL = 0.1665 mmol/L. Nothing you type here leaves your browser.
The conversion
- 1 mg/dL = 0.1665 mmol/LFrom mg/dL to mmol/L: divide by 6.006. Back again: multiply by 6.006.
- 1 mg/dL = 0.01 g/LFrom mg/dL to g/L: divide by 100. Back again: multiply by 100.
Mass and molar units are linked by the molecular weight: 60.06 g/mol (urea (carbamide), CH4N2O). Source: NCBI PubChem.
Common values
From zero to about twice the usual upper limit, plus the usual limits themselves.
| mg/dL | mmol/L | g/L |
|---|---|---|
| 15 | 2.5 | 0.15 |
| 18 | 3 | 0.18 |
| 20 | 3.3 | 0.2 |
| 21 | 3.5 | 0.21 |
| 24 | 4 | 0.24 |
| 27 | 4.5 | 0.27 |
| 39 | 6.5 | 0.39 |
| 40 | 6.7 | 0.4 |
| 42 | 7 | 0.42 |
| 45 | 7.5 | 0.45 |
| 47 | 7.8 | 0.47 |
| 48 | 8 | 0.48 |
| 51 | 8.5 | 0.51 |
| 54 | 9 | 0.54 |
| 57 | 9.5 | 0.57 |
| 60 | 10 | 0.6 |
| 80 | 13.3 | 0.8 |
| 100 | 16.7 | 1 |
| 120 | 20 | 1.2 |
Usual ranges in each unit
What labs print as the reference range, by who was tested. Sources for each range are on the Urea page.
| Who | mg/dL | mmol/L | g/L |
|---|---|---|---|
| 16+ | 15–47 | 2.5–7.8 | 0.15–0.47 |
| Men, 18–29 | 18–45 | 3–7.5 | 0.18–0.45 |
| Men, 30–49 | 18–48 | 3–8 | 0.18–0.48 |
| Men, 50–59 | 21–51 | 3.5–8.5 | 0.21–0.51 |
| Men, 60–69 | 21–54 | 3.5–9 | 0.21–0.54 |
| Men, 70–79 | 21–57 | 3.5–9.5 | 0.21–0.57 |
| Men, 80–89 | 24–60 | 4–10 | 0.24–0.6 |
| Men, 90+ | 27–60 | 4.5–10 | 0.27–0.6 |
| Women, 18–29 | 15–39 | 2.5–6.5 | 0.15–0.39 |
| Women, 30–49 | 15–42 | 2.5–7 | 0.15–0.42 |
| Women, 50–59 | 18–48 | 3–8 | 0.18–0.48 |
| Women, 60–69 | 18–51 | 3–8.5 | 0.18–0.51 |
| Women, 70–79 | 21–57 | 3.5–9.5 | 0.21–0.57 |
| Women, 80–89 | 21–60 | 3.5–10 | 0.21–0.6 |
| Women, 90+ | 24–60 | 4–10 | 0.24–0.6 |
| 1–15 | 15–39 | 2.5–6.5 | 0.15–0.39 |
| 0.077–0 | 6–33 | 1–5.5 | 0.06–0.33 |