Use this chemistry calculator to reproduce a named relationship with explicit quantities and units for study, laboratory planning, or an independent numerical check.

Initial concentration M1 (mol/L)

Stock concentration before dilution.

Initial volume V1 (L)

Volume of stock solution used.

Final concentration M2 (mol/L)

Target concentration after dilution.

Solve V2 from the dilution relation M1V1=M2V2 given stock and target concentrations. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Final volume V2 (L)

Final solution volume after dilution.

• Concentration conversions require an unambiguous amount basis, solution volume, density, purity, and temperature. Volumes may not be additive, and molarity, molality, formality, equivalents, and mass fraction are not interchangeable.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Check units and significant figures, compare the result with limiting cases, and use measured or source-specific constants where available. Laboratory, safety, and regulatory decisions require validated methods and appropriate uncertainty analysis.

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