Dilution Calculator

Use the dilution equation C1V1 = C2V2 to find any unknown variable.

Dilution Calculator

Use the dilution equation C1V1 = C2V2 to find any unknown variable.

Formula
C1 x V1 = C2 x V2
What is This Tool?

The dilution equation C1V1 = C2V2 relates the concentration and volume before and after dilution. Adding solvent decreases concentration but increases volume, and the total amount of solute stays constant.

Formula
C1 x V1 = C2 x V2 Where: C1 = initial concentration V1 = initial volume C2 = final concentration V2 = final volume
Worked Examples

1. Diluting a stock solution

Given: C1 = 2 M, V1 = 0.5 L, C2 = 0.5 M

V2 = (C1 x V1) / C2

V2 = (2 x 0.5) / 0.5

V2 = 2.0 L

Result: 2.0 L

2. Making saline solution

Given: C1 = 10%, V1 = 100 mL, C2 = 0.9%

V2 = (10 x 100) / 0.9

V2 = 1111.1 mL

Result: 1111.1 mL

Frequently Asked Questions