Molarity Dilution Calculator

Enter the initial concentration, initial volume and final volume to calculate the diluted concentration.

Molarity Dilution Calculator

Calculate the resulting concentration after diluting a solution to a new volume, using C1V1 = C2V2.

This is a mathematical calculation. Ensure initial and final volumes use the same unit, and the final volume must be equal to or greater than the initial volume for a real dilution.

The dilution equation, C1V1 = C2V2, relates a solution’s initial concentration and volume to its concentration and volume after adding more solvent. This calculator solves for the final concentration given the initial concentration, initial volume, and the target final volume.

Example

  • With the default values shown above, this calculator returns: Final Concentration (C2) ≈ 1.0000; Solvent to Add ≈ 400.00.

Frequently Asked Questions

What is the dilution equation?

C1V1 = C2V2, where C1 and V1 are the initial concentration and volume, and C2 and V2 are the concentration and volume after dilution — the total amount of solute stays the same, only the volume changes.

How much solvent do I need to add?

Subtract the initial volume from the final (target) volume — this calculator shows that amount directly as “Solvent to Add”.

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