Dilution Calculator

Solve dilution problems with C₁V₁ = C₂V₂ for any unknown variable

C₁V₁ = C₂V₂ → 2 M × 100 mL = 0.5 M × 400 mL
Initial concentration (C₁)
2M
Initial volume (V₁)
100mL
Final concentration (C₂)
0.5M
Final volume (V₂)
400mL
Dilution: C₁V₁ = C₂V₂Two beakers comparing initial and final states of a dilution. The left beaker shows higher concentration in less volume; the right beaker shows lower concentration in more volume.C₁ = 2 MV₁ = 100 mLdiluteC₂ = 0.5 MV₂ = 400 mLC₁V₁ = C₂V₂2 M × 100 mL = 0.5 M × 400 mL

About this calculator

Dilution Calculator solves C₁V₁ = C₂V₂ for any unknown variable. Enter three of the four values — initial concentration, initial volume, final concentration, or final volume — to instantly calculate the fourth. Ideal for chemistry, biology, pharmacy, and laboratory dilution problems.

Common examples

  • C₁ = 2 M, V₁ = 100 mL, C₂ = 0.5 M → V₂ = 400 mL
  • C₁ = 5 M, V₁ = 50 mL, V₂ = 250 mL → C₂ = 1 M
  • C₁ = 10 M, C₂ = 2 M, V₂ = 500 mL → V₁ = 100 mL
  • V₁ = 200 mL, C₂ = 3 M, V₂ = 400 mL → C₁ = 6 M
  • C₁ = 12 M, V₁ = 25 mL, C₂ = 1.5 M → V₂ = 200 mL