Weight Calculation Formulas

Precision Material Calculations

Engineering Desk

Use these standard metallurgical formulas to estimate the weights of various stainless steel profiles, pipes, sheets, and bars based on dimension inputs.

Material / Component	Calculation Formula
Lead Pipe	Calculation of S.S.Sheets, Circle, Pipes, Round Bar & Flat Bar
S.S. Sheets & Plates	Metric `Dia (mm) × Dia (mm) × Thick (mm) / 160 = Gms. Per PC` Imperial `Dia (mm) × Dia (mm) × Thick (mm) × 0.00000063 = Kg. Per PC`
S.S. Pipe	Weight/Mtr `(O.D. - W.Thick) × W.Thick × 0.0248` Alt Formula `(O.D. - W.Thick) × W.Thick × 0.00758`
S.S. Round Bar	Per Meter `Dia (mm) × Dia (mm) × 0.00623 = Wt. Per Mtr.` Per Feet `Dia (mm) × Dia (mm) × 0.0019 = Wt. Per Feet.`
S.S. Square Bar	Per Meter `Dia (mm) × Dia (mm) × 0.00788 = Wt. Per Mtr.` Per Feet `Dia (mm) × Dia (mm) × 0.0024 = Wt. Per Feet.`
S.S. Hexagonal Bar	Per Meter `Dia (mm) × Dia (mm) × 0.00680 = Wt. Per Mtr.` Per Feet `Width (mm) × Dia (mm) × 0.002072 = Wt. Per Feet`
S.S. Flat Bar	Per Meter `Width (mm) × Thick (mm) × 0.00798 = Wt. Per Mtr.` Per Feet `Width (mm) × Thick (mm) × 0.00243 = Wt. Per Feet.`
Brass/Copper Pipe	Formula 1 `(O.D. - Thick) × Thick × 0.0260 = Wt. Per Mtr.` Formula 2 `(O.D. - Wt) × Wt × 0.0345 = Wt. Per Mtr.`
Aluminium Pipe	`(O.D. - Thick) × Thick × 0.0083 = Wt. Per Mtr.`
Aluminium Sheet	`Length (Mtr) × Width (Mtr) × Thick (mm) × 2.69 = Wt. Per PC` Weight of Conversion of Mtr to Feet: Wt of 1 Mtr / 3.2808 = Wt. Per Feet.
Barlow’s Formula	P = 2ST / D or S = DP / 2t or D = 2st / p Variable Key P = Bursting Pressure (psi) S = Tensile Strength of Material T = Wall Thickness (inches) D = Outside Diameter (inches)