Earthing Resistance

Calculate Earthing Resistance instantly with the exact formula and a worked example.

Earthing Resistance

Soil ρ, Ω·m
Electrode L, m
Electrode d, m
Grounding R
33.9368Ω
R = ρ/(2πL)·ln(4L/d)Calculate Earthing Resistance instantly with the exact formula and a worked example.
R
33,94 Ω

More about: Earthing Resistance

What it calculates

The “Earthing Resistance” calculator computes Grounding R in Ω from 3 parameters: soil ρ, ω·m, electrode l, m, electrode d, m.

A standard physics formula used in educational and engineering tasks.

Example calculation

With parameters Soil ρ, Ω·m = 100, Electrode L, m = 3, Electrode d, m = 0.02 the result is 33.94 Ω (R = ρ/(2πL)·ln(4L/d)).

How to use

  1. Enter soil ρ, ω·m, electrode l, m and electrode d, m — each field above is adjustable with a slider.
  2. Grounding R (Ω) is calculated automatically as you type.
  3. Check the worked example below to see the formula applied to real numbers.
  4. Copy the result or bookmark this calculator.

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FAQ

How is Earthing Resistance calculated?
The Earthing Resistance calculator computes Grounding R (in Ω) from soil ρ, ω·m, electrode l, m, electrode d, m. Enter your values above and the exact formula is applied instantly; a worked example with real numbers is shown below.
Is the Earthing Resistance calculator free?
Yes. It is completely free, needs no signup, runs entirely in your browser, and sends no data to any server.

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