Molarity Converter
Convert molar concentration between mol/L, mmol/L, µmol/L, and mol/m³.
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Enter a molar concentration value and choose a from/to unit to convert between mol/L, mmol/L, µmol/L, and mol/m³.
Your result
1,000
Converted value
AI explanation
Formula
Converted value = amount × (from-unit-to-mol/L factor) ÷ (to-unit-to-mol/L factor)Worked example
1 mol/L to mmol/L
| Field | Value |
|---|---|
| Amount | 1 |
| From unit | mol/L |
| To unit | mmol/L |
| Converted value | 1000 |
Assumptions
- Molarity units are exact ratios of moles to volume — this converter doesn't need any substance-specific data (unlike converting molarity to a mass concentration, which requires a molar mass, e.g. via the Molecular Weight Calculator).
Frequently asked questions
What is molarity?
Molarity (mol/L, often written M) measures the concentration of a solute in a solution as moles of solute per liter of solution.
Is mol/m³ the same as mmol/L?
Yes — 1 mol/m³ equals 1 mmol/L exactly, since a cubic meter is 1000 liters.
How do I convert molarity to a mass concentration (like g/L)?
Multiply the molarity (mol/L) by the substance's molar mass (g/mol) — use the Molecular Weight Calculator to find the molar mass from a chemical formula.