Molarity from mass
Molarity from mass: use solute mass, supplied molar mass, final solution volume. Review the formula, worked example and calculation steps.
Inputs
Use the units shown—
Enter your values and select Calculate.
Formula & explanation
Molarity = (mass/molar mass)/solution volume
Variables & units
- Solute mass
- g · minimum 0, maximum 1000000000000
- Supplied molar mass
- g/mol · minimum 0.000001, maximum 1000000000000
- Final solution volume
- L · minimum 0.000001, maximum 1000000000000
Worked example
5.844 g with molar mass 58.44 g/mol in 1 L of final solution gives 0.1 mol/L.
Assumptions
Use final solution volume, not solvent volume. Supply correct chemical form, hydration state, purity and molar mass.
Formula version 1.0.0. JavaScript floating-point arithmetic applies. Results display up to 6 decimal places; stored values retain available precision. Use the units shown.
Practice with an example
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