Formula of weight calculation

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sometime we need to calculate weight for structural steel fabrication process or any other engineering process . today i have share most important factor and formula for steel weight calculation. i hope This post will helping civil engineering students.

Standard conversion factors

Quantityconversion in inchconversion in MM
1INCH =  25.4 MILLIMETRE
1FOOT =  0.3048 METRE
1YARD =  0.9144 METRE
1MILE =  1.6093 KILOMETER
1ACRE =  0.4047 HECTARE
1POUND =  0.4536 KILOGRAM
1MILLIMETRE=  0.0394 INCH
1METRE =  3.2808FOOT
1METRE = 1.0936YARD
1DEGREE FARENHEIT X 5/9 – 32 =DEGREE CELSIUS
Theoretical Metal Weight Calculation Formula
Weight calculation formula for  Aluminium Sheet
WEIGHT (KGS) = LENGTH (MM) X BREADTH (MM) X 0. 00000026 X THICKNESS
Example – The weight of Aluminum sheet of thickness 5 mm, length 2440mm and breadth 1220 mm shall be
2440x1220X 0.0000026 X 5 = 38.698 Kgs/Sheet
Weight calculation formula for  Aluminium Pipe
OD (mm) – THICK(mm) X THICK(mm) X0.0083 = WEIGHT PER METRE
For example :Aluminium pipe 1 1/4”x3mm/ 38ODx3mmx6meter Please weight
38x3x3x0.0083×6=17kg
Weight calculation formula for  Brass/Copper Pipe
OD (mm) – THICK (mm) X THICK(mm) X 0.0260 = WEIGHT PER METRE
Weight calculation formula for Copper Sheet
WEIGHT (KGS) = LENGTH (MM) X BREADTH (MM) X 0. 0000087 X THICKNESS
Example – The weight of coppper sheet of thickness 1 mm, length 1220mm and breadth 355mm shall be
1220X355 X 0.0000087 X 1 = 3.76 Kgs/Sheet
 Weight calculation formula for brass Sheet
WEIGHT (KGS) = LENGTH (MM) X BREADTH (MM) X 0. 0000085 X THICKNESS
Example – The weight of brass sheet of thickness 1 mm, length 1220mm and breadth 355mm shall be
1220 X355X 0.0000085 X 1 = 3.68 Kgs/Sheet
Weight calculation formula for S.S hexagonal Bar
DIA (mm) X DIA (mm) X 0.00680 = WT. PER Mtr
Dia (mm) X Dia (mm) X 0.002072 = Wt. Per foot.
Weight calculation formula for  SS Sheet
Length (Mtr) X Width (Mtr) X Thick(mm) X 8 = Weight Per Piece
Length (ft) X Width (ft) X Thick(inch) X 3 /4 = Weight Per Piece
Weight calculation formula for  SS Circle
SS / MS CIRCLE
DIA(mm) X DIA (mm) X THICK(mm) 0.0000063 = Kg Per Piece
Weight calculation formula for  SS Round Bar
DIA (mm) X DIA (mm) X 0.00623 = WEIGHT PER METRE
10mm SS Round bar weight? 10x10x0.00623 =
Weight calculation formula for  SS / ms pope 
OD ( mm) – W.Tthick(mm) X W.Thick (mm) X 0.0248 = Weight Per Metre
OD ( mm) – W.Tthick(mm) X W.Thick (mm) X 0.00756 = Weight Per Foot
Weight calculation formula for MS Round Bar
WEIGHT (KGS ) = 3.14 X 0.00000785 X ((diameter / 2)X( diameter / 2)) X LENGTH.
Example : A Round of 40mm diameter and length 13 metre then the weight shall be.
3.14 X 0.00000785 X ((40/2) X ( 40/2)) X 3000 mm = 29.59kgs / metre
ms Round bar 30mm weight ? formula = 3.14 X 0.00000785 X ((30/2) X ( 30/2)) X 6000 mm = 33.29 kgs / metre
Weight calculation formula for MS Square Bar
WEIGHT (KGS ) = WIDTH X WIDTH X 0.00000785 X LENGTH.
Example : A Square of size 30mm and length 6 metre then the weight shall be.
30x30X 0.00000785 X 6000mm = 42.41 kgs/metre
Weight calculation formula for GI Sheet
WEIGHT (KGS) = LENGTH (MM) X WIDTH (MM) X 0. 00000785 X THICKNESS
For Example – The weight of Gi Sheet of 4mm thickness and size 1220 MM X 2440 MM shall be
1220x2440x0.000007854×4 =93.52kg
Weight calculation formula for MS Sheet
WEIGHT (KGS) = LENGTH (MM) X WIDTH (MM) X 0. 00000785 X THICKNESS
example – The weight of MS Sheet of 10mm thickness and size 1220 MM X 2440 MM shall be
1220MM X 2440 MM X 0.00000785 X 10mm = 233.79KGS/ SHEET

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