Dilution Calculator

Your details

Pick which of the four dilution variables to calculate. Enter the other three.
C1 and C2 must be in the same unit. The calculation is unit-agnostic.
V1 and V2 are displayed in this unit. The math converts everything internally.
Concentration of your stock (starting) solution.
Desired concentration of the final diluted solution.
Total volume of the diluted solution you want to prepare.
Show the concentration at each successive dilution step.
Stock volume needed (V1)
10mL

Volume of stock solution to measure out.

Solvent to add90mL
Dilution factor (C1/C2)10
Stock as % of total10%

Pipette 10 mL of stock into your vessel and top up to the final volume.

  • The dilution factor is 10-fold: the stock is that many times more concentrated than the final solution.
  • Add approximately 90 mL of solvent, but always make up to the final volume mark in a calibrated flask for accuracy.
  • C1V1 = C2V2 works because the moles of solute are conserved when you add solvent.
  • A single-step dilution is appropriate at this dilution factor.

Next stepPipette the stock, add most of the solvent, mix, then bring to the final volume mark.

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