Molarity & Dilution Calculator
Calculate molarity, moles, mass or volume of a solution, or solve a dilution with C₁V₁ = C₂V₂.
How to use
- 1Choose molarity or dilution.
- 2For molarity, enter the mass, molar mass and volume. For dilution, enter three of C₁, V₁, C₂ and V₂ and leave the unknown blank.
How it's calculated
Molarity M = moles ÷ litres; moles = mass ÷ molar mass. Dilution: C₁V₁ = C₂V₂.
Frequently asked questions
What does 1 M mean?
One mole of solute per litre of solution.
How do I make a dilution?
Use V₁ = C₂V₂ ÷ C₁ of the stock, then add solvent up to the final volume V₂.
Molarity or molality?
Molarity is per litre of solution; molality is per kilogram of solvent and doesn't change with temperature.