Porosity and Permeability Calculator

Find porosity from void and total volume.

Porosity (%) 30

Formula: porosity = void volume ÷ total volume × 100

Step-by-step with your numbers:

1. Values used:

2. Void volume = 30 cm³

3. Total volume = 100 cm³

5. Porosity = (30 / 100) x 100 = 0.3 x 100 = 30%

Did we solve your problem today?

Porosity is the fraction of a material's volume made up of pores or voids.

The math behind it

porosity = void volume ÷ total volume × 100. It controls how much fluid a rock or soil can hold.

30 cm³ voids in 100 cm³ → 30% porosity.

Porosity vs permeability?

Porosity is storage capacity; permeability is how easily fluid flows through.