Rebar Weight Calculator

Estimate reinforcement mass from bar diameter, total length and bar count using the common metric approximation.

How it works

Estimate reinforcement mass from bar diameter, total length and bar count using the common metric approximation.

Core method:
Unit mass ≈ d² / 162 kg/m for diameter d in millimetres. Total mass = unit mass × total length × allowance.
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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