How the Rebar Weight Calculator works
Weight per metre = D² ÷ 162.2 (D in mm). Total = weight per metre × length × number of bars.
How to use this calculator
- Sign up free and verify your email to unlock the calculator.
- Choose Metric (m, mm, m³, kg) or Imperial (ft, in, cft, lb) units.
- Enter the bar diameter, length per bar, no. of bars.
- Results update instantly — read the quantities in the Results panel.
- Add a wastage allowance and confirm against your drawings and specifications before ordering.
Typical uses
Steel ordering and bar bending schedule checks.
Assumptions & limitations
Results are planning estimates based on standard assumptions for steel & rebar work. They do not replace structural design, site measurement or project specifications. Material densities, wastage and mix proportions vary by region and supplier.
Frequently asked questions
- How does the Rebar Weight Calculator work?
- Weight per metre = D² ÷ 162.2 (D in mm). Total = weight per metre × length × number of bars.
- Can I use the Rebar Weight Calculator in feet and inches?
- Yes. Switch to Imperial and enter feet, inches, square feet or pounds — the calculator converts automatically and shows results in imperial units.
- When should I use the Rebar Weight Calculator?
- Steel ordering and bar bending schedule checks.
- Is this construction calculator free?
- Yes. All CM PRO construction calculators are free — you only need to sign up and verify your email.
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