Looking for a quick and easy way to calculate the weight of flat steel bars? Look no further than the flat bar weight calculator from Machinemfg!
With this handy tool, you can quickly determine the weight of flat steel bars based on their dimensions, making it easy to plan your projects and manage your materials.
Whether you’re working on a construction project, building custom tools, or creating mechanical parts, the flat bar weight calculator is an essential resource for any metalworking enthusiast.
Not only is this tool incredibly useful, but it’s also incredibly easy to use. Simply input the dimensions of your flat steel bar, and the calculator will do the rest, providing you with the weight in kilograms per meter.
With a wide range of dimensions and weights included in the chart, you’ll be able to find the information you need for any project.
So why wait? Try out the flat bar weight calculator from Machinemfg today and start making your metalworking projects a success!
What is flat bar?
Flat steel refers to a type of steel with a width of 12-300mm, thickness of 3-60mm, rectangular section, and slightly rounded edges. It can be used as a finished product or as raw material for welded pipes and thin slabs for laminated rolling.
Flat steel is commonly used for making hoop iron, tools, and mechanical parts, as well as for house frame structural components and escalators in buildings.
Flat Bar Weight Calculator
According to the dimensions, shape, weight, and allowable deviation specified by GB/t702-2008, the thickness of hot-rolled flat steel typically ranges from 3mm to 60mm, while the width ranges from 10mm to 200mm.
Hot-rolled flat steel can be delivered either according to its actual weight or its theoretical weight, depending on the market specifications.
You can use the following flat steel weight calculator to calculate the weight of flat bar.
Related Tool: Steel Weight Calculator
Flat Bar Weight Chart
| Spec. (mm) | Weight | Spec. (mm) | Weight | Spec. (mm) | Weight | Spec. (mm) | Weight |
| kg/m | kg/m | kg/m | kg/m | ||||
| 12×4 | 0.38 | 16×9 | 1.15 | 20×10 | 1.57 | 25×8 | 1.57 |
| 5 | 0.47 | 10 | 1.26 | 22×4 | 0.69 | 9 | 1.77 |
| 6 | 0.57 | 18×4 | 0.57 | 5 | 0.86 | 10 | 1.96 |
| 7 | 0.66 | 5 | 0.71 | 6 | 1.04 | 11 | 2.16 |
| 8 | 0.75 | 6 | 0.85 | 7 | 1.21 | 12 | 2.36 |
| 14×4 | 0.44 | 7 | 0.99 | 8 | 1.38 | 14 | 2.75 |
| 5 | 0.55 | 8 | 1.13 | 9 | 1.55 | 16 | 3.14 |
| 6 | 0.66 | 9 | 1.27 | 10 | 1.73 | 28×3 | 0.66 |
| 7 | 0.77 | 10 | 1.41 | 11 | 1.9 | 4 | 0.88 |
| 8 | 0.88 | 20×4 | 0.63 | 12 | 2.07 | 5 | 1.1 |
| 16×4 | 0.5 | 5 | 0.79 | 25×3 | 0.59 | 6 | 1.32 |
| 5 | 0.63 | 6 | 0.94 | 4 | 0.79 | 7 | 1.54 |
| 6 | 0.75 | 7 | 1.1 | 5 | 0.98 | 8 | 1.76 |
| 7 | 0.88 | 8 | 1.26 | 6 | 1.18 | 9 | 1.98 |
| 8 | 1 | 9 | 1.41 | 7 | 1.37 | 10 | 2.2 |
| Spec. (mm) | Weight | Spec. (mm) | Weight | Spec. (mm) | Weight | Spec. (mm) | Weight |
| kg/m | kg/m | kg/m | kg/m | ||||
| 28×11 | 2.42 | 30×16 | 3.77 | 32×18 | 4.52 | 36×20 | 5.65 |
| 12 | 2.64 | 18 | 4.24 | 20 | 5.02 | 40×3 | 0.94 |
| 14 | 3.08 | 20 | 4.71 | 36×3 | 0.85 | 4 | 1.26 |
| 16 | 3.53 | 32×3 | 0.75 | 4 | 1.13 | 5 | 1.57 |
| 16 | 3.53 | 32×3 | 0.75 | 4 | 1.13 | 5 | 1.57 |
| 30×3 | 0.71 | 4 | 1.01 | 5 | 1.41 | 6 | 1.88 |
| 4 | 0.94 | 5 | 1.25 | 6 | 1.69 | 7 | 2.2 |
| 5 | 1.18 | 6 | 1.5 | 7 | 1.97 | 8 | 2.51 |
| 6 | 1.41 | 7 | 1.76 | 8 | 2.26 | 9 | 2.83 |
| 7 | 1.65 | 8 | 2.01 | 9 | 2.51 | 10 | 3.14 |
| 8 | 1.88 | 9 | 2.26 | 10 | 2.82 | 11 | 3.45 |
| 9 | 2.12 | 10 | 2.54 | 11 | 3.11 | 12 | 3.77 |
| 10 | 2.36 | 11 | 2.76 | 12 | 3.39 | 14 | 4.4 |
| 11 | 2.59 | 12 | 3.01 | 14 | 3.95 | 16 | 5.02 |
| 12 | 2.83 | 14 | 3.51 | 16 | 4.52 | 18 | 5.65 |
| 14 | 3.36 | 16 | 4.02 | 18 | 5.09 | 20 | 6.28 |
| 45×3 | 1.06 | 50×4 | 1.57 | 56×5 | 2.2 | 60×6 | 2.83 |
| 4 | 1.41 | 5 | 1.96 | 6 | 2.64 | 7 | 3.3 |
| 5 | 1.77 | 6 | 2.36 | 7 | 3.08 | 8 | 3.77 |
| Spec. (mm) | Weight | Spec. (mm) | Weight | Spec. (mm) | Weight | Spec. (mm) | Weight |
| kg/m | kg/m | kg/m | kg/m | ||||
| 6 | 2.12 | 7 | 2.75 | 8 | 3.52 | 9 | 4.24 |
| 7 | 2.47 | 8 | 3.14 | 9 | 3.95 | 10 | 4.71 |
| 8 | 2.83 | 9 | 3.53 | 10 | 4.39 | 11 | 5.18 |
| 9 | 3.18 | 10 | 3.93 | 11 | 4.83 | 12 | 5.65 |
| 10 | 3.53 | 11 | 4.32 | 12 | 5.27 | 14 | 6.59 |
| 11 | 3.89 | 12 | 4.71 | 14 | 6.15 | 16 | 7.54 |
| 12 | 4.24 | 14 | 5.5 | 16 | 7.03 | 18 | 8.48 |
| 14 | 4.95 | 16 | 6.28 | 18 | 7.91 | 20 | 9.42 |
| 16 | 5.65 | 18 | 7.07 | 20 | 8.79 | 63×3 | 1.48 |
| 18 | 6.36 | 20 | 7.85 | 60×3 | 1.41 | 4 | 1.98 |
| 20 | 7.07 | 56×3 | 1.32 | 4 | 1.88 | 5 | 2.47 |
| 50×3 | 1.18 | 4 | 1.76 | 5 | 2.36 | 6 | 2.97 |
| 63×7 | 3.46 | 65×8 | 4.08 | 70×9 | 4.95 | 75×10 | 5.89 |
| 8 | 3.95 | 9 | 4.59 | 10 | 5.5 | 11 | 6.48 |
| 9 | 4.45 | 10 | 5.1 | 11 | 6.04 | 12 | 7.07 |
| 10 | 4.94 | 11 | 5.61 | 12 | 6.59 | 14 | 8.24 |
| 11 | 5.44 | 12 | 6.12 | 14 | 7.69 | 16 | 9.42 |
| 12 | 5.93 | 14 | 7.14 | 16 | 8.79 | 18 | 10.6 |
| 14 | 6.92 | 16 | 8.16 | 18 | 9.89 | 20 | 11.78 |
| Spec. (mm) | Weight | Spec. (mm) | Weight | Spec. (mm) | Weight | Spec. (mm) | Weight |
| kg/m | kg/m | kg/m | kg/m | ||||
| 16 | 7.91 | 18 | 9.19 | 20 | 10.99 | 80×3 | 1.88 |
| 18 | 8.9 | 20 | 10.21 | 75×3 | 1.77 | 4 | 2.51 |
| 20 | 9.69 | 70×3 | 1065 | 4 | 2.36 | 5 | 3.14 |
| 65×3 | 1.53 | 4 | 2.2 | 5 | 2.94 | 6 | 3.77 |
| 4 | 2.04 | 5 | 2.75 | 6 | 3.53 | 7 | 4.4 |
| 5 | 2.55 | 6 | 3.3 | 7 | 4.12 | 8 | 5.02 |
| 6 | 3.06 | 7 | 3.85 | 8 | 4.71 | 9 | 5.65 |
| 7 | 3.57 | 8 | 4.4 | 9 | 5.3 | 10 | 6.28 |
| 80×11 | 6.91 | 85×12 | 8.01 | 90×14 | 9.89 | 95×14 | 10.44 |
| 12 | 7.54 | 14 | 9.34 | 16 | 11.3 | 16 | 11.93 |
| 14 | 8.79 | 16 | 10.68 | 18 | 12.72 | 18 | 13.42 |
| 16 | 10.05 | 18 | 12.01 | 20 | 14.13 | 20 | 14.92 |
| 18 | 11.3 | 20 | 12.35 | 30 | 21.2 | 22 | 16.41 |
| 20 | 12.56 | 90×3 | 2.12 | 95×3 | 2.24 | 25 | 18.84 |
| 85×3 | 2 | 4 | 2.83 | 4 | 2.98 | 28 | 20.88 |
| 4 | 2.67 | 5 | 3.53 | 5 | 3.73 | 30 | 22.37 |
| 5 | 3.34 | 6 | 4.24 | 6 | 4.47 | 100×3 | 2.36 |
| 6 | 4 | 7 | 4.95 | 7 | 5.22 | 4 | 3.14 |
| 7 | 4.67 | 8 | 5.65 | 8 | 5.97 | 5 | 3.93 |
| Spec. (mm) | Weight | Spec. (mm) | Weight | Spec. (mm) | Weight | Spec. (mm) | Weight |
| kg/m | kg/m | kg/m | kg/m | ||||
| 8 | 5.34 | 9 | 6.36 | 9 | 6.71 | 6 | 4.71 |
| 9 | 6.01 | 10 | 7.07 | 10 | 7.46 | 7 | 5.5 |
| 10 | 6.67 | 11 | 7.77 | 11 | 8.2 | 8 | 6.28 |
| 11 | 7.34 | 12 | 8.48 | 12 | 8.95 | 9 | 7.07 |
| 100×10 | 7.85 | 105×7 | 5.77 | 110×4 | 3.45 | 110×28 | 24.18 |
| 11 | 8.64 | 8 | 6.59 | 5 | 4.32 | 30 | 25.91 |
| 12 | 9.42 | 9 | 7.42 | 6 | 5.18 | 120×3 | 2.83 |
| 14 | 10.99 | 10 | 8.24 | 7 | 6.04 | 4 | 3.77 |
| 16 | 12.56 | 11 | 9.07 | 8 | 6.91 | 5 | 4.71 |
| 18 | 14.13 | 12 | 9.89 | 9 | 7.77 | 6 | 5.65 |
| 20 | 15.7 | 14 | 11.54 | 10 | 8.64 | 7 | 6.59 |
| 22 | 17.27 | 16 | 13.19 | 11 | 9.5 | 8 | 7.54 |
| 25 | 19.63 | 18 | 14.84 | 12 | 10.36 | 9 | 8.48 |
| 28 | 21.98 | 20 | 16.49 | 14 | 12.09 | 10 | 9.42 |
| 30 | 23.55 | 22 | 18.18 | 16 | 13.82 | 11 | 10.36 |
| 105×3 | 2.47 | 25 | 20.61 | 18 | 15.54 | 12 | 11.3 |
| 4 | 3.3 | 28 | 23.08 | 20 | 17.27 | 14 | 13.19 |
| 5 | 4.12 | 30 | 24.73 | 22 | 19 | 16 | 15.07 |
| Spec. (mm) | Weight | Spec. (mm) | Weight | Spec. (mm) | Weight | Spec. (mm) | Weight |
| kg/m | kg/m | kg/m | kg/m | ||||
| 120×20 | 18.84 | 125×14 | 13.74 | 130×10 | 10.21 | 140×10 | 10.99 |
| 22 | 20.72 | 16 | 15.7 | 11 | 11.23 | 11 | 12.09 |
| 25 | 23.55 | 18 | 17.66 | 12 | 12.25 | 12 | 13.19 |
| 28 | 26.38 | 20 | 19.63 | 14 | 14.29 | 14 | 15.39 |
| 30 | 28.26 | 22 | 21.5 | 16 | 16.33 | 16 | 17.58 |
| 125×3 | 2.94 | 25 | 24.53 | 18 | 18.87 | 18 | 19.78 |
| 4 | 3.93 | 28 | 27.48 | 20 | 20.41 | 20 | 21.98 |
| 5 | 4.91 | 30 | 29.44 | 22 | 22.45 | 150×3 | 3.53 |
| 6 | 5.89 | 130×3 | 3.06 | 140×3 | 3.3 | 4 | 4.71 |
| 7 | 6.67 | 4 | 4.08 | 4 | 4.4 | 5 | 5.89 |
| 8 | 7.85 | 5 | 5.1 | 5 | 5.5 | 6 | 7.07 |
| 9 | 8.83 | 6 | 6.12 | 6 | 6.59 | 7 | 8.24 |
| 10 | 9.81 | 7 | 7.14 | 7 | 7.69 | 8 | 9.42 |
| 11 | 10.79 | 8 | 8.16 | 8 | 8.79 | 9 | 10.6 |
| 12 | 11.78 | 9 | 9.18 | 9 | 9.89 | 10 | 11.78 |
| 150×11 | 12.95 | 150×14 | 16.49 | 150×18 | 21.2 | 150×20 | 23.55 |
| 12 | 14.13 | 16 | 18.84 | ||||
