Conductivity to Resistivity Calculator
Enter a material’s electrical conductivity to calculate its resistivity (or the reverse), since the two are simple reciprocals of each other.
Conductivity and resistivity
Electrical conductivity and resistivity describe the same material property from opposite angles: conductivity measures how easily a material carries current, while resistivity measures how strongly it resists it.
The formula
The two are exact reciprocals: ρ = 1 ÷ σ, where σ is conductivity in siemens per meter (S/m) and ρ is resistivity in ohm-meters (Ω·m). The calculator also shows resistivity in the commonly used micro-ohm-centimeter and ohm-mm²/m units seen on wire and material datasheets.
Both values are temperature-dependent for real materials (resistivity typically rises with temperature for metals), so datasheet values are usually specified at a reference temperature like 20°C. This calculator is for general electrical engineering education.