Back to Tools
Solution calculator
Solution Calculator
Calculate molarity, molality, normality, and preparation instructions with advanced scientific accuracy.
Input
Solution inputs
About the Solution calculator
Find the concentration of a solution from the mass of solute, its molecular weight and the volume of solvent.
How to use the Solution calculator
- Enter the Solute mass, Molecular weight and Solvent volume with its unit.
- Choose the Target output: molarity, molality or normality (with an Equivalents factor for normality).
- Press Calculate.
Formula and method
Molarity = (mass ÷ molecular weight) ÷ volume in litres.
Worked example
58.44 g of sodium chloride (molecular weight 58.44) in 1 L of solution is 1 M.
Tips
- Molarity uses the volume of the final solution. Molality uses the mass of the solvent in kilograms.
Frequently Asked Questions
Molarity multiplied by the number of reactive equivalents per mole.