micromole per liter to millimole per liter
Convert micromole per liter (μmol/L) to millimole per liter (mmol/L). Use an editable molar concentration converter, conversion formula, and reference table.
1 μmol/L = 0.001 mmol/L
Conversion formula
One micromole per liter equals 0.001 millimole per liter. Multiply your value in micromole per liter by this factor to get millimole per liter. For the reverse conversion, divide by the same factor.
Worked example
To convert 5 micromole per liter:5 × 0.001 = 0.005 mmol/L
Conversion table
| micromole per liter (μmol/L) | millimole per liter (mmol/L) |
|---|---|
| 0.01 | 0.00001 |
| 0.1 | 0.0001 |
| 1 | 0.001 |
| 2 | 0.002 |
| 5 | 0.005 |
| 10 | 0.01 |
| 25 | 0.025 |
| 50 | 0.05 |
| 100 | 0.1 |
| 1000 | 1 |
About these measurements
Molar concentration is amount of substance per unit volume.
The base reference used here is the mole per cubic meter. One micromole per liter is 0.001 base units; one millimole per liter is 1 base units.
Important distinctions
Compound units must match the quantity and dimension. Temperature intervals use size factors rather than temperature offsets. Calorie and BTU entries use the explicit definitions shown.
Precision
The converter uses stored conversion factors and floating-point arithmetic. Results display up to ten significant digits, switching to scientific notation for very small or large values. Keep the precision of your original measurement when reporting results.
Common questions
How do I convert μmol/L to mmol/L?
Multiply the quantity in μmol/L by 0.001. You can also type the value into the converter above.
Can I reverse the conversion?
Yes. Use the swap button or open the millimole per liter to micromole per liter converter.
Reference
NIST Guide to the SI — conversion factors and prefix conventions. SI prefixes scale units by powers of ten; the dimension-specific notes above describe the assumptions used on this page.
