Electric Conductivity Converter

Electric conductivity is an intrinsic material property measuring how easily a material conducts electric current, independent of its specific shape or size — the mathematical inverse of resistivity. It's what makes copper an excellent conductor and glass an excellent insulator, and it's a fundamental property used to characterize and compare materials.

Our Electric Conductivity converter supports the SI unit, siemens/meter (S/m), along with picosiemens/meter for the very low conductivity values typical of insulators and semiconductors. Mho/meter and mho/centimeter are numerically identical to their siemens counterparts, since mho is simply the older name for siemens. The CGS system contributes abmho/meter and abmho/centimeter (EMU) and statmho/meter and statmho/centimeter (ESU), historical units from two different CGS unit systems.

To use the converter, select your starting and target units from the dropdown lists and enter a value — the result is calculated instantly to up to 12 significant digits. For example, converting seawater's typical conductivity of about 5 siemens/meter to mho/centimeter gives 0.05 mho/cm, a conversion commonly needed in oceanographic and water quality instrumentation, which often reports conductivity in different scale conventions.

Electric conductivity conversions are essential in water quality and environmental testing, where conductivity measurements estimate the concentration of dissolved ions and salts in water (pure water has very low conductivity, while seawater and industrial wastewater have much higher values). Materials scientists and engineers use conductivity to compare and select conductor, semiconductor, and insulator materials for specific applications, and geophysicists conduct ground conductivity surveys to locate mineral deposits, groundwater aquifers, and buried infrastructure.

All conversion factors used in this tool are drawn from standard, internationally recognized unit definitions, so results are dependable for water quality testing, materials science, and geophysical survey work. The converter is free, requires no account, and works equally well on desktop and mobile devices.