Diluting a stock solution is one of the most common lab calculations. The dilution equation C₁V₁ = C₂V₂ relates the concentration and volume before dilution (stock) to the concentration and volume after dilution (final). Enter any three values and this calculator solves the fourth — plus the dilution factor and how much solvent to add. Volumes can be entered in µL, mL, or L. Concentrations use mol/L (molarity). Everything runs instantly in your browser with no signup.
Dilution calculator free — solve C1V1=C2V2 for stock concentration, volumes, or final strength. Lab prep in your browser, no signup.
Assumes volumes are additive and temperature effects are negligible. For mass-based solution prep, use the Solution Concentration Calculator.
