Pipe & Tube Weight Calculator
Calculate weight of round pipes, square tubes, and rectangular hollow sections
mm
mm
pcs
⚖️Calculation Result
Unit Weight
3.853 kg
Material
Mild Steel
Est. Cost
₹250
Density
7850
📐 Round Bar Formula
W = π/4 × D² × L × ρ
D = Diameter · L = Length · ρ = Density
Round Bar Weight per Meter Chart
8mm0.395 kg
10mm0.617 kg
12mm0.888 kg
16mm1.578 kg
20mm2.466 kg
25mm3.853 kg
32mm6.313 kg
40mm9.865 kg
50mm15.413 kg
The D²/162 formula is a quick shortcut for Mild Steel round bars. Simply square the diameter in mm and divide by 162 to get the weight per meter in kg. For example, a 25mm bar: 25² / 162 = 3.858 kg/m.
❓ Frequently Asked Questions
What is the D²/162 formula?
+Can I use this calculator for reinforcement TMT bars?
+What is the standard commercial length of a round bar in India?
+How do you calculate the weight of a brass or copper rod?
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