Steel Bar Weight Calculator
Theoretical weight of round bar: <code>W = 0.006165 × d²</code> kg/m (d in mm). Pipe, plate and square bar calculators are available in the same family.
Disclaimer：Results are produced by deterministic formulas and are intended for quantity estimating and option comparison only. A qualified engineer must verify them against the project specification, design documents and actual site conditions before use. The author accepts no liability for any loss arising from their use.
ASSUMPTIONS
RESULT
CALCULATION
METHOD
Round bar
W = 0.006165 × d² kg/m (d in mm), derived from W = π/4 · d² · ρ.- Theoretical weights are based on a steel density of 7850 kg/m³ and differ from actual weighed weights because of rolling tolerances.
- Structural sections (I-beams, channels, angles) have complex cross-sections: use the section tables rather than these simplified formulas.
More in this series
Related tools
Engineering Translation
Working across languages on tenders, specs and technical clauses? EngTranslate gives you domain-trained Chinese ⇄ English translation, a construction & BIM terminology base, and metric–imperial unit handling in one place. EngTranslate →