Steel Weight
Calculator
Online weight calculator for round bar, pipe, plate, hex, square and flat bar profiles. Supports carbon steel, stainless steel, and aluminum.
Weight Calculation Formulas
Round Bar
d: Diameter (mm), L: Length (m)
Hexagon Bar
d: Across Flats (mm), L: Length (m)
Square Bar
a: Side (mm), L: Length (m)
Flat Bar
a: Width, b: Thickness (mm)
Pipe / Tube
D: OD, t: Wall Thickness (mm)
Sheet / Plate
a: Width, b: Length, t: Thickness (mm)
* All formulas are derived from carbon steel density (7.85 g/cm³). For other materials, multiply by the density ratio. Calculated values are theoretical; actual weights may vary 3-5% due to manufacturing tolerances.
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Get a QuoteFrequently Asked Questions
What is the steel weight calculation formula?
The steel weight formula varies by profile type. Round bar: d² x 0.006165 x L (kg), Pipe: (D-t) x t x 0.02466 x L (kg), Plate: a x b x t x 0.00000785 (kg). All formulas are derived from carbon steel density (7.85 g/cm³).
How is pipe weight calculated?
Pipe weight formula: (Outer Diameter - Wall Thickness) x Wall Thickness x 0.02466 x Length. All dimensions in mm, length in meters. Result is in kg.
Is stainless steel heavier than carbon steel?
Yes, stainless steel is slightly heavier. Carbon steel: 7.85 g/cm³, AISI 304: 7.93 g/cm³, AISI 316: 7.98 g/cm³. Selecting the correct density value is important.
How is steel plate weight calculated?
Steel plate weight: Width(mm) x Length(mm) x Thickness(mm) x 0.00000785. Example: 1000x2000x10mm plate: 1000 x 2000 x 10 x 0.00000785 = 157 kg.
How accurate is this calculator?
Our calculator provides theoretical weight values. Actual weight may vary by 3-5% depending on manufacturing tolerances and surface conditions. Weighing is recommended for exact values.
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