Information
The production of reinforcing steel is regulated by a standard. The document outlines the technical requirements and conditions, classification, assortment, testing methods, and other product requirements. Below are some reference tables that can be used to determine the theoretical mass of one meter of rebar. You can also calculate the weight of the product yourself, or use this calculator.
Table: Theoretical mass of 1 running meter of rebar
|
Number,
Nominal diameter, mm
|
Diameter d, mm
|
Cross-sectional area, cm
|
Weight per meter, kg
|
Number of meters in a tonne
|
|
Rebar 6
|
5.75
|
0.283
|
0.222
|
4504.5
|
|
Rebar 8
|
7.5
|
0.503
|
0.395
|
2531.65
|
|
Rebar 10
|
9.3
|
0.785
|
0.617
|
1620.75
|
|
Rebar 12
|
11
|
1.131
|
0.888
|
1126.13
|
|
Rebar 14
|
13
|
1.540
|
1.210
|
826.45
|
|
Rebar 16
|
15
|
2.010
|
1.580
|
632.91
|
|
Rebar 18
|
17
|
2.540
|
2.000
|
500
|
|
Rebar 20
|
19
|
3.140
|
2.470
|
404.86
|
|
Rebar 22
|
21
|
3.800
|
2.980
|
335.57
|
|
Rebar 25
|
24
|
4.910
|
3.850
|
259.74
|
|
Rebar 28
|
26.5
|
6.160
|
4.830
|
207.04
|
|
Rebar 32
|
30.5
|
8.040
|
6.310 |
158.48
|
|
Rebar 36
|
34.5
|
10.180
|
7.990
|
125.16
|
|
Rebar 40
|
38.5
|
12.570
|
9.870
|
101.32
|
|
Rebar 45
|
43
|
15.000
|
12.480
|
80.13
|
|
Rebar 50
|
48
|
19.630
|
15.410
|
64.89
|
|
Rebar 55
|
53
|
23.760
|
18.650
|
53.62
|
|
Rebar 60
|
58
|
28.270
|
22.190
|
45.07
|
|
Rebar 70
|
68
|
38.480
|
30.210
|
33.1
|
|
Rebar 80
|
77.5
|
50.270
|
39.460
|
25.34
|
What is the purpose of the online calculator?
Our calculator helps you calculate the weight of carbon steel rebar online. Simply specify the length of the product and the nominal diameter (range - from 6mm to 80mm).
We offer a service that combines two functions: a rebar weight calculator by mass and by meter. This way, you can determine the length of the finished product by knowing the weight, or vice versa - find out the weight of a product of a certain length. The online rebar calculator is useful for drafting project estimates and calculating metal structures. With it, you can also find out the cost of the finished product by specifying the price per meter or tonne.
How to use the calculator?
- Select the calculation method (by length or by mass).
- Select the rebar diameter from the drop-down list (e.g., 8 mm, 10 mm, 12 mm).
- Enter the value "Mass" or "Number of meters".
- If necessary, specify the price per meter or tonne.
- Click the red "Calculate" button.
- In the upper left corner, in the "Calculation Results" column, you will see the obtained data.
How to calculate the weight manually?
Knowing the nominal diameter and material density, you can manually calculate the weight of the rebar. It is calculated using the formula m = D x D x Pi / 4 x ro, according to which the mass of one meter of rebar equals the theoretical mass of a circle with the same diameter. Values from the formula:
- m – the sought mass of the rebar.
- D — nominal diameter of the rebar.
- ro — material density.
- Pi – the number Pi.
The density of carbon steel rebar is 7850.00 kg/m3.
How to determine the actual weight of the rebar?
Just like the reference tables, the rebar calculator calculates the theoretical weight of the product. Deviations of the product's geometric dimensions from the nominal ones are allowed. You can find out the actual weight by weighing the rebar of a certain length. Accurate information about the weight and other characteristics of the rebar is provided in the product's certificate from the manufacturer.
In construction and installation works, calculating the weight of metal products is extremely important as it allows you to assess the final parameters of the structures being erected and determine the cost of the material (using the weight of 10 mm rebar per meter). For calculations, you can use special tables that show the parameters of the bars and their calculated weight, as well as popular online calculators that require accurate data on the technical characteristics of rolled metal.
Knowing the exact weight of rolled materials can save you a lot by selecting the appropriate vehicle for their transportation.
Our online calculator allows you to quickly and accurately calculate the weight of rebar. For example, you can find out the weight of rebar online for various diameters such as 8 mm, 10 mm, and 12 mm. If you need to calculate the weight of 1 meter of rebar, simply enter the corresponding data into the form. For convenience, there is also a table where you can find the calculated weight of rebar by length. Use the calculation formula to get the weight per meter for the chosen diameter.
Calculating rebar weight has never been easier! Use our service for precise and quick calculations. Calculate by length or find out the rebar weight online - all this is possible with our tool.
