Steel Round Bar Weight Calculator

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Weight Calculations Formula And Conversion Factors

To calculate the weight of steel bars:

  • ROUND – dia.mm2 x 0.006165 = Weight in kilograms per metre
  • ROUND – dia.mm2 x 0.004143 = Weight in lbs. per foot
  • HEXAGON – size mm2 x 0.006798 = Weight in kilograms per metre
  • HEXAGON – size mm2 x 0.00457 = Weight in lbs. per foot
  • SQUARE – Size mm2 x 0.000785 = Weight in kilograms per metre
  • SQUARE – Size mm2 x 0.00527 = Weight in lbs. per foot
  • Feet to metres x 0.3048
  • Metres to feet x 3.2809
  • U.K. tons per sq. inch (tons f/in2) x 15.4443 = Mega Pascals (MPa)
  • Mega Pascals (MPa) x 0.64749 = U.K. tons f per square inch
  • Newton per sq. milimeter (N/mm2) x 0.064749 = U.K. tons per sq. inch

 

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Square and Round Bars Weight and Dimensional Conversions

0.7843 kg/cm per meter or | (cft) cubic foot of steel=490 lbs

Diameter or
Width
(mm)
Weight per meter
Sectional Area
Perimeter
Square
(kg)
Round
(kg)
Square
(cm²)
Round
(cm²)
Square
(cm)
Round
(cm)
5.0
0.20
0.15
0.25
0.20
2.0
1.57
5.5
0.24
0.19
0.30
0.24
2.2
1.78
6.0
0.28
0.22
0.36
0.28
2.4
1.88
7.0
0.38
0.30
0.49
0.38
2.8
2.20
8.0
0.50
0.39
0.64
0.50
3.2
2.51
9.0
0.64
0.50
0.81
0.64
3.6
2.83
10
0.73
0.63
1.00
0.79
4.0
3.14
11
0.95
0.75
1.21
0.95
4.4
3.46
12
1.13
0.89
1.44
1.13
4.8
3.77
14
1.54
1.21
1.96
1.54
5.6
4.40
16
2.01
1.58
2.56
2.01
6.4
5.03
18
2.54
2.00
3.24
2.54
7.2
5.65
20
3.14
2.47
4.00
3.14
8.0
6.28
22
3.80
2.98
4.84
3.80
8.8
6.91
25
4.91
3.85
6.25
4.91
10.0
7.85
28
6.15
4.83
7.84
6.16
11.2
8.80
32
8.04
6.31
10.24
8.04
12.8
10.05
36
10.17
7.99
12.96
10.18
14.4
11.31
40
12.56
9.86
16.00
12.57
16.0
12.57
45
15.90
12.49
20.25
15.90
18.0
14.14
50
19.62
15.41
25.00
19.64
20.0
15.71
56
24.62
19.34
31.36
24.63
22.4
17.59
63
31.16
24.47
36.69
31.17
25.2
19.79
71
39.57
31.08
50.41
39.59
28.4
22.31
80
50.24
39.46
64.00
50.27
32.0
25.13

 

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