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.
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
