# Permeability Coefficient

Written by Jerry Ratzlaff on . Posted in Geotechnical Engineering

Permeability coefficient, abbreviated as K, also called coefficient of permeability, is the measure of how much water can easily flow through the soil.

## Permeability Coefficient formula

 $$\large{ k = n \; v }$$

### Where:

 Units English Metric $$\large{ k }$$ = permeability coefficient $$\large{\frac{ft}{sec}}$$ $$\large{\frac{m}{s}}$$ $$\large{ n }$$ = porosity $$\large{dimensionless}$$ $$\large{ v }$$ = velocity of water flowing through pores $$\large{\frac{ft}{sec}}$$ $$\large{\frac{m}{s}}$$
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