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Round Bar Weight Calculator – Free Online Tool

What is a round bar?

A round bar refers to a long, solid piece of steel with a circular cross section. Round bar specifications are expressed in millimeters and indicate its diameter. For example, a “50mm” round bar refers to a steel bar with a diameter of 50 millimeters.

Stacked steel round section rolling profile. Warehouse of metal products.

How to calculate the weight of the round bar?

The round bar calculation formula is:

Weight (kg/m) = External diameter × External diameter ×0.00617

Round Bar Weight Calculator

According to the standard “GB/T702-2008” for hot-rolled steel bars, the diameter of these bars can range from 5.5 mm to 310 mm. The weight of hot rolled round steel bar can be provided as actual weight or theoretical weight.

The theoretical weight calculation formula for round steel bars is the same as that for wire rod, as both have the same shape and density. You can use the following round bar weight calculator to determine the weight of a round bar.

Related Tool: Steel Weight Calculator

Round Bar Weight Table

Diameter Weight
kg/m		 Diameter Weight
kg/m
5.5 0.186 13 1.04
6 0.222 14 1.21
6.5 0.26 15 1.39
7 0.302 16 1.58
8 0.395 17 1.78
9 0.499 18 two
10 0.617 19 2.23
* 11 0.746 20 2.47
12 0.888 21 2.72
22 2.98 63 24.5
* 23 3.26 *65 26
24 3.55 *68 28.5
25 3.85 70 30.2
26 4.17 75 34.7
*27 4.49 80 39.5
28 4.83 85 44.5
*29 5.18 90 49.9
30 5.55 95 55.6
*31 5.92 100 61.7
32 6.31 105 68
*33 6.71 110 74.6
34 7.13 115 81.5
*35 7.55 120 88.8
36 7.99 125 96.3
38 8.9 130 104
40 9.86 140 121
42 10.9 150 139
45 12.5 160 158
48 14.2 170 178
50 15.4 180 200
53 17.3 190 223
*55 18.6 200 247
56 19.3 220 298
*58 20.7 250 385
60 22.2
  • Download Round Bar Weight Table PDF File

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