# How to calculate weight of steel?

Steel or reinforcement is an important element in civil engineering & construction field. If you are to to know How to do steel weight calculation or want to know the steel calculation formula. You are on right blog.

Steel is being used in construction for a long time. Steel got importance because of its tensile strength. As we know concrete is good in compressive strength but poor in tension, So the steel bars, reinforcement, wire meshes are being used in construction of structures with concrete.

## Calculation of steel weight in meters (by dia in mm):

How do you calculate the weight of steel? Its really simple to calculate weight of steel in meter/kg by diameter in millimeter.

What is the formula of steel weight calculation? **Formula for per unit weight of steel in meter =** **D ^{2}/162**.

What is **162** in steel weight calculation? **162 **is derived constant value that is used to find the per unit meter weight of steel.

How do you calculate the weight of 12mm steel?

- Simply take square of diameter of steel bar in
**millimeter**and divide by**162**. It will give the Weight of per steel in meter. - Steel bar= 12mm dia
- weight = (12)
^{2}÷ 162 - w.t = 144÷162
- weight of
**12mm**steel bar per meter=**0.888kg/m**

with this formula you can get per meter weight of any steel bar. To get the total weight simply multiply **0.889** with total length of steel in meters.

Dia of bar in Millimeter | Weight of Per meter bar |

6 mm | 0.22 kg/meter |

10 mm | 0.62 kg/meter |

12 mm | 0.89 kg/meter |

16 mm | 1.58 kg/meter |

20 mm | 2.469 kg/meter |

25 mm | 3.585 kg/meter |

Read also quantity of plaster material calculation.

## Calculation of steel in feet (by dia in inches):

**Formula for per unit weight of steel in foot =** **D ^{2}** x

**1.21**

- Simply take square of diameter of steel bar in
**inches**and multiply by**1.21**. It will give the weight of steel in feet. - Steel bar = 0.5 inch (4 sooter)
- w.t = (0.5)
^{2}x 1.21 - w.t = 0.25 x 1.21
- Weight of
**0.5 inch**(4 sooter) bar per foot =**0.302kg/ft**

Weight of **0.75 inch** (6 sooter) bar per foot =0.75^{2} × 1.21 = **0.680kg/ft**

with this formula you can get per foot weight of any steel bar. To get the total weight simply multiply **0.302** with total length of steel in feet.

Bar no or Sooter | Weight of per foot bar |

#3 (0.375″) | 0.170 kg/foot |

#4 (0.5″) | 0.302 kg/foot |

#6 (0.75″) | 0.680 kg/foot |

“8 (1”) | 1.21 kg/foot |

Read also Concrete calculation.

## Calculation of steel in feet (**by bar no**):

If you want to calculate per foot weight of steel bar in sooter or bar number. Following are the formula for that.

**Formula for per unit weight of steel in foot ****=** **D ^{2}** ÷

**52.91**

Steel bar = #3 , #4 , #6 , #8 (This is the number of steel bar or bar size in sooter)

Take the bar size in **sooter** or as a **bar number**.

**Lets take #4 bar**- Weight = 4
^{2}÷ 52.91 - weight of
**#4 steel bar**per foot =**0.302 kg/ft**

**Lets take #6 bar**- Weight = 6
^{2}÷ 52.91 - weight of
**#6 steel bar**per foot =**0.680 kg/ft**