NEN 1010 · NEN 62305 · NEN 50522

Earth resistance.
Instantly determined.

Two professional calculators for electricians and contractors. From maximum resistance to exact rod depth — backed by BRO soil data.

Calculate resistance — freeView pricing
Always free

Resistance Calculator

Calculate the maximum grounding resistance per NEN 1010. Choose your grid, installation type and RCD — get four output layers instantly.

  • Resistance Calculator unlimited
  • TT and TN grid systems
  • NEN 1010 standards
  • No account needed
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From €10/moor €2.95 per calculation

Rod Depth Calculator

Enter a postal code. EarthGND automatically retrieves soil type, groundwater depth and pH from BRO — and calculates the required rod depth.

  • BRO soil data by postal code
  • Risk class I – IV
  • Three calculated scenarios
  • PDF report
  • Groundwater & pH corrections
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BRO Soil Data

Soil type, groundwater depth and pH directly from the Dutch Soil Registration by postal code.

NEN 1010 standards

All calculations conform to NEN 1010, NEN 62305 and NEN 50522 — including legal maximum.

Indicative report

Export a substantiated PDF with input values, formula and risk class for your file.