Rebar Weight Calculator

Weight of reinforcing bar by size, length and quantity.

Runs in your browser — nothing is uploaded

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Material estimates only — add waste, confirm quantities with your supplier and follow local building codes. Not an engineering guarantee.

How to use Rebar Weight Calculator

  1. Enter your values — the unit for each field is shown next to it.
  2. The result updates instantly as you type.
  3. Copy the results, or change inputs to compare scenarios.

Formula & assumptions

kg/m = d² ÷ 162.2 (d = bar diameter in mm, steel at 7,850 kg/m³)