Steel / Rebar Weight Calculator

Use the D²/162 formula to calculate the weight of TMT bars, rods and rebars. Supports 6 mm to 36 mm diameters and custom sizes.

Bar Details

Select diameter, length & quantity

Bar Diameter (mm)

Length Unit

Total Length (m)

No. of Bars

Weight Estimate — 12 mm Ø

88.89 kg

Total weight for 1 bar × 100.00 m

Weight per metre0.889 kg/m

Weight per foot0.271 kg/ft

Cross-section area113.10 mm²

Total Length100.00 m

Quick Reference — D²/162

Diakg/mkg/ft6 mm0.2220.0688 mm0.3950.12010 mm0.6170.18812 mm0.8890.27116 mm1.5800.48220 mm2.4690.75325 mm3.8581.17628 mm4.8401.47532 mm6.3211.92736 mm8.0002.438

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Formula: Weight (kg/m) = D²/162, where D is diameter in mm. Based on steel density 7,850 kg/m³.