Rebar Grid Calculator

Calculate bar counts, total installed length and approximate steel weight for a rectangular two-direction rebar grid.

How it works

Calculate bar counts, total installed length and approximate steel weight for a rectangular two-direction rebar grid.

Core method:
Bar counts are based on clear dimensions and spacing. Total length is multiplied by layers and allowance; mass uses d²/162 kg/m.
Before you use the result: Check project drawings, supplier data and site conditions before ordering materials.

Practical use

Enter dimensions from the latest drawings or verified site measurements. Adjust allowances and material properties to the supplier or specification you are actually using. Results update instantly as inputs change.

  • Keep units consistent with the source information.
  • Use project-specific densities, pack sizes and coverage rates where provided.
  • Round purchasing quantities to supplier packaging and delivery rules.

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