Reinforcement bar weight

Set the bar diameter, length and number of bars to see the mass per metre and the total.

Works in metric or imperial units.

Learn rebar properly

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Questions students ask

How much does a 12 m Y12 bar weigh?

About 10.7 kg: 12²/162 = 0.888 kg/m × 12 m.

What formula does it use?

Mass per metre = d²/162 (d in mm).

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