Earthing Resistance Calculator
Earthing System Resistance Calculator
Earthing system resistance calculator — enter soil resistivity, electrode type, and dimensions to calculate earth resistance automatically. Follows BNBC 2020 and IEEE 80 standards.
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Excel
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How to Use
Follow these simple steps to get started
Enter soil resistivity (Ω-m)
Select electrode type (Rod, Plate, Strip)
Enter electrode dimensions
Earth resistance will be calculated automatically
Check that required resistance is < 1Ω
Tool Preview
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Who Needs This
Frequently Asked Questions
According to BNBC 2020: ≤ 1Ω. For some applications, 5Ω is acceptable.
Use the Wenner 4-point method. Typical value: 10-1000 Ω-m.
Yes, parallel electrodes — combined resistance is calculated using the formula.
Chemical earthing gives lower resistance. You can compare in the calculator.
Resistance increases in dry season — a safety factor of 1.5 should be applied.
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