CGCivil Geo Tools

Geotechnical and Hydraulics

Hydraulic Conductivity Converter

Convert hydraulic conductivity and coefficient of permeability between common laboratory and field units.

Live unit conversion

Converted value

0.0001

cm/s

0.000001 m/s = 0.0001 cm/s

Conversion Basis

Hydraulic conductivity, often denoted k, is commonly reported in m/s, cm/s, ft/day, or similar length-per-time units. The converted value represents the same conductivity magnitude; it does not account for fluid viscosity or test conditions.

target k = source k x source-to-meter-per-second factor / target factor

Common Examples

  • 1 m/day = 1.15741 x 10^-5 m/s
  • 1 x 10^-6 m/s = 1 x 10^-4 cm/s
  • 1 ft/day = 3.52778 x 10^-6 m/s

Engineering Use and Limitations

  • Hydraulic conductivity depends on soil fabric, density, saturation, stress state, temperature, and permeant properties.
  • Intrinsic permeability has dimensions of area and is not the same quantity as hydraulic conductivity.
  • When comparing laboratory and field values, consider scale effects, anisotropy, sample disturbance, and test method.

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