United Stainless LLP is a trusted brand in the metal sector, offering technical expertise and quality products to facilitate proper planning and implementation in the industrial projects. In the metal manufacturing sector, construction and engineering, accuracy is critical in controlling the cost and safety of the structure. The Round Bar Weight Chart is one of the most popular instruments of reference that can be used to find out the precise weight of round bars depending on their diameter and length. These figures are reported in kg and measured in mm, and thus, the chart is a very essential tool to engineers, purchasers, and fashioners.
Round bars are solid metallic products in the form of a cylinder, which are utilised in machining, fabrication, fasteners, automobiles, shafts, and construction structures. Because the supply of round bars is done in terms of weight, the standardized Round Bar Weight Chart can be used to prevent the error of estimating, shortage of materials and unnecessary surplus products.
What Is a Round Bar Weight Chart?
Round Bar Weight Chart This is a reference table indicating the theoretical weight of round bars per meter or standard length. The chart is arranged according to diameter in mm with the weights in kg. These values are determined by the general mathematical formula that takes into account the cross-sectional area of the bar and the density of the metal.
The commonly used formula is:
Weight (kg) = (π × Diameter² × Length × Density) / 4
Although manual calculation is possible, it is time-consuming and increases the risk of error. This is why most professionals rely on weight charts for fast and accurate calculations.
Importance of Accurate kg Calculations by mm Size
Accurate kg calculations based on mm size play a crucial role in industrial operations. Material pricing is directly linked to weight, so even minor miscalculations can lead to significant cost variations in bulk orders. Transportation planning also depends on precise weight data to ensure safe loading and compliance with logistics regulations.
In engineering and structural applications, weight accuracy ensures proper load distribution and adherence to design specifications. A reliable Round Bar Weight Chart supports safer designs and smoother project execution.
Standard Sizes in a Round Bar Weight Chart
A typical Round Bar Weight Chart covers a wide range of diameters, usually starting from 6 mm and extending to 300 mm or more. The chart generally includes:
- Diameter in
mm
- Weight per meter in
kg
- Weight per standard length
such as 3m, 6m, or 12m
These standardized references help buyers and engineers quickly determine required quantities without repeated calculations.
Round Bar Weight Chart
|
Dia |
Weight |
Dia |
Weight |
|
(mm) |
per metre (kg) |
(in) |
per metre (kg) |
|
3mm |
0.06 |
1/8″ |
0.06 |
|
4mm |
0.10 |
3/16″ |
0.14 |
|
5mm |
0.16 |
1/4″ |
0.25 |
|
6mm |
0.22 |
5/16″ |
0.39 |
|
7mm |
0.30 |
3/8″ |
0.56 |
|
8mm |
0.40 |
7/16″ |
0.77 |
|
10mm |
0.62 |
1/2″ |
1.00 |
|
12mm |
0.89 |
9/16″ |
1.22 |
|
14mm |
1.22 |
5/8″ |
1.56 |
|
15mm |
1.40 |
11/16″ |
1.89 |
|
16mm |
1.59 |
3/4″ |
2.25 |
|
18mm |
2.01 |
7/8″ |
3.07 |
|
20mm |
2.48 |
1″ |
4.03 |
|
22mm |
3.00 |
|
|
|
24mm |
3.57 |
|
|
|
25mm |
3.88 |
|
|
Round Bar Weight Chart in mm, Kg, Ft
|
Size in mm |
Average Weight |
|
|
KG/MTR |
KG/FT |
|
|
10 |
0.62 |
0.18 |
|
12 |
0.90 |
0.30 |
|
14 |
1.20 |
0.40 |
|
16 |
1.60 |
0.50 |
|
18 |
2.00 |
0.60 |
|
20 |
2.50 |
0.80 |
|
22 |
3.00 |
0.90 |
|
24 |
3.56 |
1.08 |
|
25 |
3.90 |
1.20 |
|
28 |
4.80 |
1.50 |
|
30 |
5.55 |
1.69 |
|
32 |
6.30 |
1.90 |
|
34 |
7.14 |
2.18 |
|
36 |
8.00 |
2.44 |
|
40 |
9.90 |
3.00 |
|
45 |
12.49 |
3.81 |
|
50 |
15.40 |
4.70 |
|
56 |
19.34 |
5.89 |
|
60 |
22.20 |
6.80 |
|
63 |
24.47 |
7.46 |
|
63.5 |
24.86 |
7.58 |
|
65 |
26.05 |
7.94 |
|
70 |
30.20 |
9.20 |
|
73 |
32.86 |
10.00 |
|
75 |
34.72 |
10.58 |
|
78 |
37.51 |
11.43 |
|
80 |
39.50 |
12.00 |
|
83 |
42.47 |
12.95 |
|
85 |
44.55 |
13.58 |
|
90 |
50.00 |
15.20 |
|
92 |
52.19 |
15.91 |
|
93 |
53.39 |
16.27 |
|
95 |
55.65 |
16.95 |
|
100 |
61.66 |
18.79 |
|
105 |
67.98 |
20.72 |
|
110 |
74.60 |
22.74 |
|
115 |
81.64 |
24.88 |
|
125 |
96.34 |
29.36 |
Industrial Applications of Round Bar Weight Chart
The Round Bar Weight Chart is widely used in construction, fabrication, automotive manufacturing, oil & gas, and heavy engineering industries. Fabricators use it to estimate machining loads, while procurement teams rely on it for accurate ordering and budgeting.
In export-oriented businesses, weight charts are essential for preparing packing lists, invoices, and shipping documents, ensuring transparency and consistency across international transactions.
Value of a Round Bar Weight Chart PDF
A Round Bar Weight Chart PDF offers convenience and portability. It allows professionals to access accurate data offline, share standardized information across teams, and maintain consistency in calculations. PDFs are especially useful on project sites where quick reference in kg and mm is required.
Conclusion
A Round Bar Weight Chart is an indispensable tool for accurate material estimation and operational efficiency. By calculating weight in kg based on diameter in mm, industries can reduce waste, control costs, and improve project reliability. Whether used in planning, procurement, or execution, a well-structured weight chart—especially in PDF format—ensures precision and confidence in every application.