Dilution Calculator (C₁V₁ = C₂V₂)

Enter three values to calculate the fourth. Use consistent concentration units (e.g., M, mg/mL).

Pick which value to calculate.
Any concentration unit (keep consistent).
Any volume unit (mL, L, etc.).
Same unit as C₁.
Same unit as V₁.
Dilution factor = C₁ / C₂ = V₂ / V₁ (when C₁ and C₂ are known).
Make sure you’re not mixing units.
How we calculate

Solve for the unknown by rearranging: C₁ = (C₂V₂)/V₁, V₁ = (C₂V₂)/C₁, C₂ = (C₁V₁)/V₂, V₂ = (C₁V₁)/C₂.