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Rebar Weight Calculator

Convert reinforcement bar diameter and total length into an estimated steel weight.

Free daily preview

Calculate your quantity

1 use per day

This calculator may be used once per day in this browser. Results are planning aids and should be checked by a qualified local professional.

How to use this rebar calculator

The standard d²/162 relationship gives an approximate kilogram-per-metre value. This preview shows weight only. Rod count, laps, cutting schedules and cost remain in the app.

  1. Enter measurements from the latest drawing or a verified site measurement.
  2. Check that every value uses the unit shown beside the field.
  3. Choose a realistic allowance where the calculator asks for wastage.
  4. Review the preview, then use the app for the full material and cost breakdown.

What makes a useful construction estimate?

A useful estimate keeps dimensions, assumptions, quantities and prices separate. That makes it possible to update one local price or site measurement without rebuilding the whole calculation. Always confirm structural, soil, safety and specification decisions with the appropriate qualified professional.

Transparent planning preview. This page states what it calculates and what remains locked. It does not pretend that a short web form replaces drawings, site checks or professional judgement.