How to convert micromoles per liter to millimoles per liter
mmol/L = µmol/L × 0.001Multiply the value in micromoles per liter by 0.001. To go the other way, multiply by 1,000 (or divide by 0.001).
A micromole per liter is smaller than a millimole per liter: it takes 1,000 micromoles per liter to make one millimole per liter.
Worked examples
- 1 micromole per liter1 µmol/L × 0.001 = 0.001 mmol/L
- 5 micromoles per liter5 µmol/L × 0.001 = 0.005 mmol/L
- 10 micromoles per liter10 µmol/L × 0.001 = 0.01 mmol/L
- 20 micromoles per liter20 µmol/L × 0.001 = 0.02 mmol/L
- 100 micromoles per liter100 µmol/L × 0.001 = 0.1 mmol/L
Micromoles per liter to millimoles per liter conversion table
Values are calculated by the conversion engine and rounded to 8 significant figures.
| Micromoles per liter (µmol/L) | Millimoles per liter (mmol/L) |
|---|---|
| 0.1 µmol/L | 0.0001 mmol/L |
| 0.25 µmol/L | 0.00025 mmol/L |
| 0.5 µmol/L | 0.0005 mmol/L |
| 1 µmol/L | 0.001 mmol/L |
| 2 µmol/L | 0.002 mmol/L |
| 3 µmol/L | 0.003 mmol/L |
| 4 µmol/L | 0.004 mmol/L |
| 5 µmol/L | 0.005 mmol/L |
| 6 µmol/L | 0.006 mmol/L |
| 7 µmol/L | 0.007 mmol/L |
| 8 µmol/L | 0.008 mmol/L |
| 9 µmol/L | 0.009 mmol/L |
| 10 µmol/L | 0.01 mmol/L |
| Micromoles per liter (µmol/L) | Millimoles per liter (mmol/L) |
|---|---|
| 12 µmol/L | 0.012 mmol/L |
| 15 µmol/L | 0.015 mmol/L |
| 20 µmol/L | 0.02 mmol/L |
| 25 µmol/L | 0.025 mmol/L |
| 30 µmol/L | 0.03 mmol/L |
| 40 µmol/L | 0.04 mmol/L |
| 50 µmol/L | 0.05 mmol/L |
| 75 µmol/L | 0.075 mmol/L |
| 100 µmol/L | 0.1 mmol/L |
| 250 µmol/L | 0.25 mmol/L |
| 500 µmol/L | 0.5 mmol/L |
| 1,000 µmol/L | 1 mmol/L |
About the units
Micromole per liter (µmol/L)
The micromole per liter (µmol/L) is a unit of molar concentration (molarity) in the International System of Units (SI). One micromole per liter equals 0.001 moles per cubic meter (mol/m³).
Millimole per liter (mmol/L)
The millimole per liter (mmol/L) is a unit of molar concentration (molarity) in the International System of Units (SI). One millimole per liter equals 1 mole per cubic meter (mol/m³).
Frequently asked questions
How many millimoles per liter are in one micromole per liter?
There are 0.001 millimoles per liter in one micromole per liter, and this value is exact by definition.
How do I convert micromoles per liter to millimoles per liter?
Multiply the number of micromoles per liter by 0.001. For example, 10 µmol/L × 0.001 = 0.01 mmol/L.
How many micromoles per liter are in one millimole per liter?
One millimole per liter equals 1,000 micromoles per liter. That is the reverse factor, 1 ÷ 0.001.
What is 10 micromoles per liter in millimoles per liter?
10 µmol/L = 0.01 mmol/L.
Is this µmol/L to mmol/L converter accurate?
Yes. Both units are defined exactly in terms of SI units, so the conversion factor is exact; results are shown to 12 significant figures by default and you can change precision in the converter. Calculations run in your browser using the same tested engine that generated this page.