Porosity

Porosity, abbreviated as n, a dimensionless number, is the ratio between the pore volume of a substance and its total volume.  Porosity of a measure of a rocks capacity to store fluids.

 

Porosity formula
\(\large{ n = \frac {V_v} {V_t } }\)
Symbol	English	Metric
\(\large{ n }\) = porosity	\(\large{dimensionless}\)
\(\large{ V_t } \) = total volume of soil	\(\large{ft^3}\)	\(\large{m^3}\)
\(\large{ V_v }\) = volume of voids (air and water)	\(\large{ft^3}\)	\(\large{m^3}\)