Molality Calculator

Chemistry

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Calculates the molality of a solution given the moles of solute and the mass of the solvent.

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How To Use

How to use this calculator

Start with your values, or try a preset.

Step 1

Enter Moles of Solute and Mass of Solvent in the units shown.

Step 2

Read Molality in the results panel. Results update as you change the inputs.

Step 3

Choose a preset to load an example, then adjust the values for your situation.

Worked Examples

Example calculations

See the inputs and their calculated results.

Example 1

Moles of Solute: 1 mol; Mass of Solvent: 1 kg

Molality: 1 mol/kg

Example 2

Moles of Solute: 0.5 mol; Mass of Solvent: 0.5 kg

Molality: 1 mol/kg

Example 3

Moles of Solute: 2 mol; Mass of Solvent: 0.25 kg

Molality: 8 mol/kg

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