It is a simplified formula derived from the density of steel (7850 kg/m³) applied to circular cross-section bars. D is in mm, result is in kg/m.

Construction Calculators

Steel Weight Calculator – Calculate Steel Bar Weight

Calculate the weight of steel bars, rods, and plates. Essential for construction and engineering projects.

Diameter (mm)

Length (meters)

Number of Bars

Weight per meter0.000 kg/m

Weight per bar0.00 kg

Total Weight0.00 kg

Steel Weight Calculator Formula

Weight (kg/m) = D² / 162

Where D = diameter in mm. This is the standard formula for steel reinforcement bars.

10 bars of 12mm × 12m:

Weight/m = 12²/162 = 0.889 kg/m

Per bar = 0.889 × 12 = 10.67 kg

Total = 10.67 × 10 = 106.7 kg

What is D²/162?

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