The weight of a 12 mm diameter steel rod, assuming it is of the standard 12 m length, is 10.654 kg. Here is how you can calculate this answer:
Find the volume (in m3) of the 12 mm steel rod using the cylinder volume formula:
V = π⋅d2⋅l/4 = π⋅(12×10-3)2⋅12/4 = 1.3572×10-3 m3
Look up the steel's density. For TMT steel bars, it is 7850 kg/m3.
Multiply the volume with density to get the 12 mm steel weight:
W = 1.3572×10-3 m3 ⋅ 7850 kg/m3 = 10.654 kg
Verify this result with our steel weight calculator.
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