TMT Bar Weight Calculator 10mm 12mm India Construction
How to calculate TMT bar weight per meter for 8mm, 10mm, 12mm, 16mm bars using the D²/162 formula. Essential for steel ordering in Indian construction.
TMT (Thermo Mechanically Treated) steel bar weight calculation is a daily task for civil engineers, site supervisors, and building contractors across India. The standard formula is: Weight (kg/meter) = D² ÷ 162, where D is bar diameter in millimeters.
Common values: 8mm = 0.395 kg/m. 10mm = 0.617 kg/m. 12mm = 0.888 kg/m. 16mm = 1.578 kg/m. 20mm = 2.469 kg/m. 25mm = 3.858 kg/m. 32mm = 6.165 kg/m.
Ordering Steel for a Roof Slab
A standard residential roof slab requires approximately 3.5-4 kg of steel per sq ft. For a 1,000 sq ft slab: 3,500-4,000 kg = approximately 3.5-4 MT of steel. Use our tmt bar weight calculator india to calculate exact weight for any diameter and length. Also use our steel calculator for roof slab india for the full slab calculation including distribution bars.