Simple Dilution Calculator (C₁V₁ = C₂V₂)
Solve for any variable in the dilution equation. Select C₁, V₁, C₂, or V₂ as the unknown and get pipetting-ready volumes instantly.
Calculate Any Variable in C₁V₁ = C₂V₂ C₁V₁ = C₂V₂
Stock Solution
Final Solution
ℹ️ Frequently Asked Questions
What equation does this calculator use?
This calculator uses C₁V₁ = C₂V₂, the conservation-of-mass dilution equation. C₁ is the stock concentration, V₁ is the volume of stock to use, C₂ is the desired final concentration, and V₂ is the desired final volume.
C₁ × V₁ = C₂ × V₂
Can I solve for any variable, not just V₁?
Yes. Click the Solve for button to choose C₁, V₁, C₂, or V₂. The calculator treats the selected variable as unknown and solves using the other three values.
Why are volumes rounded to pipette-friendly values?
Real pipettes have discrete volume increments (e.g., P200 in 1 μL steps, P1000 in 5 μL steps). Rounding to these increments ensures you can actually pipette the calculated volume, reducing experimental error from imprecise pipetting.
What if my C₁ and C₂ units don't match?
C₁ and C₂ must use compatible unit types (both molar-based, both mass-based, etc.). Use the Concentration Converter to convert between unit systems first.