Dilution Factor Calculator

Your details

Single dilution solves for one unknown. Serial mode builds a full dilution series table.
Pick the unknown. Fill the other three boxes and we solve C₁V₁ = C₂V₂ for it.
Concentration of the starting (more concentrated) stock solution.
Volume of stock taken before topping up with diluent.
Concentration of the diluted solution you want.
Total volume of the diluted solution after topping up.
Solved valueMild dilution
10
Dilution factor (V₂/V₁)10×
Diluent to add (V₂ − V₁)90
ResultV₁ = 10 mL, a 10× dilution.
10 ×
2× (1:1)<210×2-10100×10-1001000×100+

That is a 10× dilution.

  • C₁V₁ = C₂V₂ holds because the moles of solute are conserved when you add solvent, only the volume changes.
  • The dilution factor V₂/V₁ tells you how many times more dilute the final solution is than the stock.
  • Prepare it by adding 90 mL of diluent to your stock volume, making the solution up to the final volume mark rather than measuring solvent separately.

Next stepWorking with a series of dilutions? Switch to Serial Dilution mode to build the full protocol table automatically.

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