**If you are looking for a readymade calculator for finding rebar weight, then** **click here.**

** For the calculation procedure, go through the following steps.👇**

The **weight of the reinforcement bar** is calculated by the formula

= [volume × density.]

Reinforcement bar. |

Now, for the calculation purpose, let us consider the rebar of **12mm.** diameter, having** 1m**. length.

12mm. dia. rebar. |

Here, length L = 1m. diameter D = 12mm. and the density of steel is 7850kg/m3

Rebar of 1m. length |

**The volume of the rebar**

= [cross-sectional area × length]

= [π ×( D2)/4 × L]

= [3.142 × ( 0.012 × 0.012) /4 × 1]

= [3.142 × .000036 × 1]

= **0.000113 cum.**

**Weight of the rebar**

= [volume × density]

= [0.000113 × 7850]

### =0.888 kg/meter.

### Alternate method:

Weight of the rebar is given by the formula

= [(D2) /162]

= [( 12 × 12 ) /162]

=144 / 162

= **0.888kg /meter.**

In the second method, we have calculated the weight easily, but the question that comes to our mind is,

### What is 162 in the reinforcement bar weight calculation formula?

Now, we will do the following step to derive that formula.

As you know,

Weight of the rebar

= [cross-sectional area × length × density]

= [π ×( D2/4) × L × 7850]

= [3.142 × ( D2/4) × (1×1000 )× 7850/(1000×1000×1000)]

Here, we have converted length and density into the mm. unit, as the diameter of the rebar is taken in the mm.

= [3.142 D2/4 × (0.00785)]

= [0.006166 D2]

Inversing 0.006166 in the above equation, we get

Weight of the rebar

= D2/162.18 per meter length.

**Note**: The diameter of the rebar should be taken in mm. while calculating the weight.

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