Molar Concentration Converter
Convert molar concentration between mol/L (M), mmol/L, µmol/L, nmol/L, pmol/L and mol/m³.
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Result
Molar Concentration units
Every unit below converts to every other one in the calculator. Values are relative to the base unit, the mole per cubic meter (mol/m³).
| Unit | Symbol | System | Value |
|---|---|---|---|
| Mole per cubic meter | mol/m³ | SI | Base unit |
| Mole per liter (molar) | mol/L | SI-accepted | = 1000 mol/m³ |
| Millimole per liter | mmol/L | SI-accepted | = 1 mol/m³ |
| Micromole per liter | µmol/L | SI-accepted | = 0.001 mol/m³ |
| Nanomole per liter | nmol/L | SI-accepted | = 0.000001 mol/m³ |
| Picomole per liter | pmol/L | SI-accepted | = 1e-9 mol/m³ |
Mole per cubic meter quick reference
| Mole per cubic meter | Mole per liter (molar) | Millimole per liter | Micromole per liter |
|---|---|---|---|
| 1 mol/m³ | = 0.001 mol/L | = 1 mmol/L | = 1000 µmol/L |
| 10 mol/m³ | = 0.01 mol/L | = 10 mmol/L | = 10000 µmol/L |
| 100 mol/m³ | = 0.1 mol/L | = 100 mmol/L | = 100000 µmol/L |
| 1000 mol/m³ | = 1 mol/L | = 1000 mmol/L | = 1000000 µmol/L |
Among the 6 molar concentration units on this page, the smallest is the picomole per liter (pmol/L) and the largest is the mole per liter (molar) (mol/L).
More molar concentration conversions
About molar concentration units
Molar concentration (molarity) is the amount of dissolved substance per volume of solution. Its SI unit is the mole per cubic meter (mol/m³), but chemistry and medicine mostly use moles per liter: 1 M = 1 mol/L = 1000 mol/m³, and 1 mmol/L equals exactly 1 mol/m³.
Converting to a mass concentration such as mg/dL needs the molar mass of the substance. For glucose (about 180.16 g/mol), 1 mmol/L is about 18.0 mg/dL. Molarity (per liter of solution) is not the same as molality (per kilogram of solvent).
Frequently asked questions
- How do I convert mmol/L to mg/dL?
- Multiply by the molar mass in g/mol and divide by 10. For glucose (about 180.16 g/mol), 5.5 mmol/L is about 99 mg/dL.
- What does 1 M mean?
- One molar: one mole of solute per liter of solution, which is exactly 1000 mol/m³. 1 mM is one millimole per liter.
- Is molarity the same as molality?
- No. Molarity is moles per liter of solution; molality is moles per kilogram of solvent (mol/kg). They are close only for dilute water solutions.
- How many moles per liter are in one mole per cubic meter?
- One mole per cubic meter = 0.001 mol/L (moles per liter).
- How many millimoles per liter are in one mole per cubic meter?
- One mole per cubic meter = 1 mmol/L (millimoles per liter).
- How many micromoles per liter are in one mole per cubic meter?
- One mole per cubic meter = 1000 µmol/L (micromoles per liter).