Rebar Weight, Bar Count & Metric Tonnage Estimator
Calculate reinforcing steel bar unit weight (kg/m and lbs/ft), total metric tons, and standard 12m (40ft) bar quantities across nominal diameters 6mm to 32mm.
Total Reinforcement Weight (Metric Tonnes)
Calculator Inputs
Total Reinforcement Weight (Metric Tonnes)
Standard 12m Bars Required
Total Weight in Kilograms (kg)
Weight per Single 12m Bar
Total Effective Length with Waste
Net Linear Length vs. Waste Allowance Breakdown
Unit weights comply with international standards (ASTM A615 / BS 4449 / ISO 6935-2) with a ±3% rolling tolerance.
All engineering calculations, structural estimates, and electrical sizing metrics are provided for preliminary estimation only. Always ensure compliance with relevant statutory building codes and occupational safety standards, verified by a certified professional engineer before practical implementation.
Calculation Methodology
Unit Weight = (Diameter² / 162.28) kg/m. Total Weight (kg) = Unit Weight * Total Length. Standard Bars (12m) = Total Length / 12.
Frequently Asked Questions
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