Enter the conductivity, length, and cross-sectional area into the calculator to determine the electrical resistance. This calculator helps in converting conductivity to resistance for a given material.

Conductivity to Resistance Formula

The following formula is used to convert conductivity to resistance:

R = L / (σ * A)


  • R is the resistance (Ω)
  • L is the length of the material (m)
  • σ is the conductivity (S/m)
  • A is the cross-sectional area (m²)

To convert conductivity to resistance, divide the length of the material by the product of its conductivity and cross-sectional area.

What is Electrical Resistance?

Electrical resistance is a measure of the opposition to the flow of electric current through a material. It is determined by the material’s properties, its length, and cross-sectional area. Resistance is an important parameter in electrical and electronic circuits, affecting how much current flows for a given voltage.

How to Calculate Resistance from Conductivity?

The following steps outline how to calculate the resistance from conductivity:

  1. First, determine the conductivity of the material (σ) in Siemens per meter (S/m).
  2. Next, determine the length of the material (L) in meters (m).
  3. Then, determine the cross-sectional area of the material (A) in square meters (m²).
  4. Use the formula R = L / (σ * A) to calculate the resistance (R) in ohms (Ω).
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem:

Use the following variables as an example problem to test your knowledge.

Conductivity (σ) = 5.8 S/m

Length (L) = 2 m

Cross-sectional Area (A) = 0.01 m²