Resistance vs. Resistivity

Calculate electrical resistance of a conductor based on resistivity, length, and cross-sectional area using the formula R = ρL/A

Calculator

Inputs

Results

Resistance (R)-- Ω
MaterialResistivity (Ω m)Resistivity (μΩ m)
Aluminum2.65×10⁻⁸0.0265
Carbon10×10⁻⁸0.10
Copper1.724×10⁻⁸0.0174
Iron10×10⁻⁸0.1
Silver1.6×10⁻⁸0.0160
MaterialResistivity (Ω m)
Bakelite1×10¹²
Glass1×10¹⁰ - 1×10¹¹
Marble1×10⁸
Mica0.9×10¹³
Paraffin Oil1×10¹⁶
Paraffin Wax (pure)1×10¹⁶
Plexiglass1×10¹³
Polystyrene1×10¹⁴
Porcelain1×10¹²
Pressed Amber1×10¹⁶
Vulcanite1×10¹⁴
Water (distilled)1×10¹⁰
MaterialRelative Resistivity (vs. Copper)
Aluminum (pure)1.6
Brass3.7-4.9
Cadmium4.4
Chromium1.8
Copper (hard-drawn)1.03
Copper (annealed)1.00
Gold1.4
Iron (pure)5.68
Lead12.8
Nickel5.1
Phosphor Bronze2.8-5.4
Silver0.94
Steel7.6-12.7
Tin6.7
Zinc3.4