CalcKit
Molar Concentration Converter
Molar concentration, or molarity, is the amount of a dissolved substance per volume of solution, counted in moles: C = n / V. Its usual unit is the mole per liter (mol/L), written M for molar: a 1 M solution has one mole of solute in each liter. The SI unit is the mole per cubic meter, and 1 mol/L = 1,000 mol/m³.
Medical tests report many values in millimoles per liter (mmol/L), such as blood sugar and cholesterol.
How to convert molar concentration
Type a value into any field, and every other unit is calculated at once. For example, 0.15 mol/L, about the salt in body fluids:
-
In mmol/L: multiply by 1,000.
0.15 * 1,000 = 150 mmol/L -
In mol/m³: also multiply by 1,000.
0.15 * 1,000 = 150 mol/m³
To turn a molar concentration into a mass concentration, multiply by the molar mass: 0.15 mol/L of salt (58.44 g/mol) is 0.15 * 58.44 = 8.77 g/L. Mass concentrations are converted in the Concentration - Solution Converter.
Common conversions
| Value | Equals |
|---|---|
| 1 mol/L | 1,000 mmol/L |
| 1 mmol/L | 0.001 mol/L |
| 1 mol/L | 1,000 mol/m³ |
| 1 mmol/L | 1 mol/m³ |
| 1 kmol/m³ | 1 mol/L |
Definition of Molar Concentration
Molar concentration, denoted by the symbol C, is defined as the number of moles of solute (n) divided by the volume (V) of the solution in liters.
C = n / V
This unit is especially valuable in analytical chemistry, where precise measurements of chemical substances are required.
Units of Molar Concentration
Each unit, with its conversion factor and definition:
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Mole / liter (mol/l): Moles of solute per liter of solution. This is the base unit of Molarity.
Conversion Factor: 1 mol/l = 1 mol/l (Base Unit) -
Mole / meter³ (mol/m³): Moles of solute per cubic meter of solution.
Conversion Factor: 1 mol/m³ = 0.001 mol/l -
Mole / centimeter³ (mol/cm³): Moles of solute per cubic centimeter of solution.
Conversion Factor: 1 mol/cm³ = 1,000 mol/l -
Mole / millimeter³ (mol/mm³): Moles of solute per cubic millimeter of solution.
Conversion Factor: 1 mol/mm³ = 1,000,000 mol/l -
Kilomole / liter (kmol/l): Kilomoles of solute per liter of solution.
Conversion Factor: 1 kmol/l = 1,000 mol/l -
Kilomole / meter³ (kmol/m³): Kilomoles of solute per cubic meter of solution.
Conversion Factor: 1 kmol/m³ = 1 mol/l -
Kilomole / centimeter³ (kmol/cm³): Kilomoles of solute per cubic centimeter of solution.
Conversion Factor: 1 kmol/cm³ = 1,000,000 mol/l -
Kilomole / millimeter³ (kmol/mm³): Kilomoles of solute per cubic millimeter of solution.
Conversion Factor: 1 kmol/mm³ = 1,000,000,000 mol/l -
Millimole / liter (mmol/l): Millimoles of solute per liter of solution.
Conversion Factor: 1 mmol/l = 0.001 mol/l -
Millimole / meter³ (mmol/m³): Millimoles of solute per cubic meter of solution.
Conversion Factor: 1 mmol/m³ = 0.000001 mol/l -
Millimole / centimeter³ (mmol/cm³): Millimoles of solute per cubic centimeter of solution.
Conversion Factor: 1 mmol/cm³ = 1 mol/l -
Millimole / millimeter³ (mmol/mm³): Millimoles of solute per cubic millimeter of solution.
Conversion Factor: 1 mmol/mm³ = 1,000 mol/l
Frequently asked questions
What is the difference between molarity and molality?
Molarity is per liter of solution, and molality per kilogram of solvent (mol/kg). For dilute water solutions they are nearly equal, but molality doesn't change with temperature, while molarity does, since the volume does.