Steel Weight Calculator
Calculates the approximate weight of steel reinforcement bars.
Lilu Baba's Steel Weight Calculator uses the standard construction-industry rebar weight formula to estimate total steel weight.
How to use this calculator
- Enter the rebar's diameter.
- Enter the total length of bar needed.
- Estimated weight updates instantly using the standard steel rebar formula.
Estimated Weight (kg)
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FAQ
Steel Weight Calculator — frequently asked questions
Weight per metre (kg/m) = (Diameter in mm)² ÷ 162 — a standard approximation used across the construction industry.
This formula is specific to round reinforcement bars (rebar) — other shapes (angles, channels) need different formulas.