Are you tired of trying to calculate the weight of rebar for your construction projects? Look no further!
Our rebar weight calculator and weight chart provide a simple and accurate solution to your problem. Say goodbye to the confusion and frustration of calculating the weight of different grades and rolling methods.
Our calculator and chart offer a consistent weight calculation formula for all types of hot rolled ribbed bars. Don’t let the weight of rebar weigh you down.
Trust our reliable tools and resources to make your construction projects a success. Keep reading to learn more.
What is rebar?
Rebar is another name for Hot Rolled Ribbed Bar. The grade of ordinary hot-rolled steel bars is indicated by the letters HRB and the minimum yield point of the grade. The letters H, R, and B stand for hot rolled, ribbed, and bars, respectively.
Hot rolled ribbed bars are divided into three grades: Grade II (HRB335, also known as old brand number 20MnSi), Grade III (HRB400, also known as old grade number 20MnSiV, 20MnSiNb, 20mnti), and Grade IV (HRB500).

How to calculate the weight of rebar?
The weight calculation formula of rebar is:
W = 0.00617 * d * d (d = section diameter mm) unit: kg/m
Rebar Weight Calculator
According to national standards, rebar can be delivered based on either the theoretical weight or actual weight. However, the market tends to use the theoretical weight as the basis for delivery, making it important to have a good understanding of how to accurately calculate the theoretical weight.

There is a common misconception regarding the calculation of theoretical weight for rebar, which is that different grades and rolling methods have different calculation methods.
In reality, the weight calculation formulas for Grade II deformed steel bar (HRB335), Grade III deformed steel bar (HRB400), or Grade IV deformed steel bar (HRB500), whether hot rolled or cold rolled, and whether for ordinary use or seismic use, are consistent. A rebar weight calculator can be used to calculate the weight of rebar.
Rebar Weight Chart
Dia. | Weight kg/m |
6 | 0.22 |
6.5 | 0.261 |
8 | 0.395 |
10 | 0.617 |
12 | 0.888 |
14 | 1.21 |
16 | 1.58 |
18 | 2 |
20 | 2.47 |
22 | 3 |
25 | 3.86 |
28 | 4.837 |
32 | 6.31 |
36 | 7.99 |
40 | 9.87 |