Enter the mass concentration (kg/m³), molarity, and molar mass into the calculator to determine the missing variable.

Mol/L to Kg/m3 Calculator

Use molarity and molar mass to convert directly to mass concentration, reverse the calculation, or use the quick unit helper.

Mol/L → kg/m³
kg/m³ → Mol/L
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Best for queries like mol/l to kg/m3, mol/dm3 to kg/m3, and mol/l to mol/m3.
Use this when you know the mass concentration and want molarity in mol/L, mol/dm³, or mol/m³.
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Example: 1 mol/L = 1000 mol/m³
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Mol/L To Kg/M3 (Mass Concentration) Formula

The following formula is used to calculate the mass concentration of solute (kg/m3) for a given molarity and molar mass.

(\rho = M \cdot m \cdot 1000)

Variables:

  • (ρ) is the mass concentration of solute in kg/m3
  • (M) is the molarity in mol/L
  • (m) is the molar mass in kg/mol
  • (1000) converts L to m3 (since 1 m3 = 1000 L)

To calculate the mass concentration in kg/m3, multiply the molarity (mol/L) by the molar mass (kg/mol), then multiply by 1000 L/m3. (Equivalently, if molar mass is in g/mol, then ρ (kg/m3) = M (mol/L) × molar mass (g/mol).)

Mol/L to kg/m³ Conversion Table (Assumes NaCl, molar mass = 58.44 g/mol)
Molarity (mol/L) Mass Concentration (kg/m³)
0.010.584
0.021.169
0.052.922
0.105.844
0.2011.688
0.2514.610
0.3319.285
0.5029.220
0.7543.830
158.440
1.2573.050
1.587.660
2116.880
2.5146.100
3175.320
4233.760
5292.200
7.5438.300
10584.400
12701.280
* Rounded to 3 decimals. Assumes solute molar mass = 58.44 g/mol (NaCl). Formula: ρ (kg/m³) = c (mol/L) × (molar mass in kg/mol) × 1000 (L/m³) = c (mol/L) × (molar mass in g/mol). Values shown are mass concentration of solute, not the overall density of the solution.

What is Mol/L to Kg/M3 Conversion?

The conversion from mol/L to kg/m3 converts molarity (mol/L) to mass concentration (kg/m3) of the solute—i.e., how many kilograms of solute are present per cubic meter of solution. Molarity measures the number of moles of solute per liter of solution, while mass concentration measures the mass of solute per volume of solution. By knowing the molar mass of the substance, you can convert between these two units. Note that this is not the same as the overall density of the solution (which includes solvent mass and depends on composition and temperature).

How to Calculate Mol/L to Kg/M3?

The following steps outline how to calculate the conversion from Mol/L to Kg/M3.

  1. First, determine the molarity of the solution (M).
  2. Next, determine the molar mass of the substance (m).
  3. Next, calculate the mass concentration using the formula (ρ = M · m · 1000).
  4. Finally, express the result in kg/m3.
  5. After inserting the values and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

Molarity (M) = 2 mol/L

Molar Mass (m) = 0.05 kg/mol

Mass Concentration (ρ) = (2 mol/L) × (0.05 kg/mol) × 1000 = 100 kg/m3