Rebar is the most essential building material for any structural construction. You cannot imagine any structural construction without Rebar. Because some major parts of the building are fatal, which cannot be made without rebar like footing, beam, slab, column, etc. In such a situation, to estimate the quantity and cost of steel used in construction before any construction, we should know the **weight of the steel bar** or know **how to calculate the weight of steel bar**.

Steel bar is known by many other names in different countries like a rod, rebar, reinforcement bar, etc. Generally in India, Pakistan, Bangladesh, etc Hindi, and Urdu-speaking places rebar is called rods or steel bars. The rest of the steel bar, rebar, or reinforcement bar is spoken in the countries of Europe, Australia, and the American continents.

## Formula for Steel bar weight

Mainly rebar is measured in 3 units first kg/m, second kg/ft, and third lb/ft. Three different formulas are used to **calculate the weight of the rebar** in all three units, which are given below.

- The D
^{2}L/162 formula is used to measure in kg/m. - The D
^{2}L/533 formula is used to measure in kg/ft. - The (D
^{2}L/533)2.2 formula is used to measure in lb/ft. (1 kg is equal to 2.2 lb, so we are multiplying by 2.2 to convert kg to lb.)

In this formula “D” is the diameter of the rebar, and L is the length of the rebar.

### How to calculate steel bar weight

To calculate the steel bar weight, you need to know the diameter of the steel bar and the length of the steel bar. The length of the steel bar is measured in two units, feet, and meters. There are 2 different formulas to calculate the weight of steel bars in feet and meters, which I have already told you above. Now further in this article, we will calculate the weight of steel bars of different sizes.

### Weight of 6 mm steel bar

6mm steel rods are very thin in size, and are rarely used in construction. Even if 6mm steel bar is used in construction, it is used for stirrups.

**6mm steel rod weight per foot**

We have the diameter of the steel bar is 6mm, and the length of the steel bar is 1 foot.

So, 6 mm steel bar weight per foot = D^{2}L/533

= (6^{2}) 1/533

= 36/533 = 0.067 kg.

So, the 6mm steel bar weight per foot is 0.067 kg per foot.

**6 mm steel bar weight per meter**

The diameter of the steel bar is 6mm, and the length of the steel bar is 1 meter.

So, 6 mm steel bar weight per meter = D^{2}L/162

= (6^{2}) 1/162

= 36/162 = 0.222 kg.

So, the 6mm steel bar weight per meter is 0.222 kg per meter.

**6 mm steel bar weight per piece**

As we all know the standard length of a steel bar is 40 feet or 12 meters.

So 1 piece steel bar length = 12 meter, and diameter = 6mm

So, 6 mm steel bar weight per piece = D^{2}L/162

= (6^{2}) 12/162

= 432/162 = 2.666 kg.

So, the 6mm steel bar weight per piece is 2.666 kg per piece.

### Weight of 8 mm steel bar

**8mm steel rod weight per foot**

We have the diameter of the steel bar is 8mm, and the length of the steel bar is 1 foot.

So, 8 mm steel bar weight per foot = D^{2}L/533

= (8^{2}) 1/533

= 64/533 = 0.120 kg.

So, the 8mm steel bar weight per foot is 0.120 kg per foot.

**8 mm steel bar weight per meter**

The diameter of the steel bar is 8mm, and the length of the steel bar is 1 meter.

So, 8 mm steel bar weight per meter = D^{2}L/162

= (8^{2}) 1/162

= 64/162 = 0.395 kg.

So, the 8mm steel bar weight per meter is 0.395 kg per meter.

**8 mm steel bar weight per piece**

As we all know the standard length of a steel bar is 40 feet or 12 meters.

So 1 piece steel bar length = 12 meter, and diameter = 8mm

So, 8 mm steel bar weight per piece = D^{2}L/162

= (8^{2}) 12/162

= 768/162 = 4.74 kg.

So, the 8mm steel bar weight per piece is 4.74 kg per piece.

**8 mm steel bar weight per bundle**

As we all know, the number of steel bars in 1 bundle of 8mm is 10.

So, a total weight of 8mm steel bar bundle = weight of 1 piece × 10

We have already calculated 8 mm steel bar weight per piece which is 4.74 kg.

So, 1 bundle 8mm steel bar weight = 1 piece 8mm weight × 10

= 4.74 × 10

= 47.4 kg.

So, the 8mm steel bar weight per bundle is 4.74 kg per bundle.

### Weight of 10 mm steel bar

**10mm steel rod weight per foot**

We have the diameter of the steel bar is 10mm, and the length of the steel bar is 1 foot.

So, 10 mm steel bar weight per foot = D^{2}L/533

= (10^{2}) 1/533

= 100/533 = 0.187 kg.

So, the 10mm steel bar weight per foot is 0.187 kg per foot.

**10 mm steel bar weight per meter**

The diameter of the steel bar is 10mm, and the length of the steel bar is 1 meter.

So, 10 mm steel bar weight per meter = D^{2}L/162

= (10^{2}) 1/162

= 100/162 = 0.617 kg.

So, the 10mm steel bar weight per meter is 0.617 kg per meter.

**10 mm steel bar weight per piece**

As we all know the standard length of a steel bar is 40 feet or 12 meters.

So 1 piece steel bar length = 12 meter, and diameter = 10mm

So, 10 mm steel bar weight per piece = D^{2}L/162

= (10^{2}) 12/162

= 1200/162 = 7.40 kg.

So, the 10mm steel bar weight per piece is 7.40 kg per piece.

**10 mm steel bar weight per bundle**

As we all know, the number of steel bars in 1 bundle of 10mm is 7.

So, a total weight of 8mm steel bar bundle = weight of 1 piece × 7

We have already calculated 10 mm steel bar weight per piece which is 7.40 kg.

So, 1 bundle 10mm steel bar weight = 1 piece 10mm weight × 7

= 7.40 × 7

= 51.8 kg.

So, the 10mm steel bar weight per bundle is 51.8 kg per bundle.

### Weight of 12 mm steel bar

**12mm steel rod weight per foot**

We have the diameter of the steel bar is 12mm, and the length of the steel bar is 1 foot.

So, 12 mm steel bar weight per foot = D^{2}L/533

= (12^{2}) 1/533

= 144/533 = 0.27 kg.

So, the 12mm steel bar weight per foot is 0.27 kg per foot.

**12 mm steel bar weight per meter**

The diameter of the steel bar is 12mm, and the length of the steel bar is 1 meter.

So, 12 mm steel bar weight per meter = D^{2}L/162

= (12^{2}) 1/162

= 144/162 = 0.888 kg.

So, the 12mm steel bar weight per meter is 0.888 kg per meter.

**12 mm steel bar weight per piece**

As we all know the standard length of a steel bar is 40 feet or 12 meters.

So 1 piece steel bar length = 12 meter, and diameter = 12mm

So, 12 mm steel bar weight per piece = D^{2}L/162

= (12^{2}) 12/162

= 1728/162 = 10.666 kg.

So, the 12mm steel bar weight per piece is 10.666 kg per piece.

**12 mm steel bar weight per bundle**

As we all know, the number of steel bars in 1 bundle of 12mm is 5.

So, a total weight of 12mm steel bar bundle = weight of 1 piece × 5

We have already calculated 12 mm steel bar weight per piece which is 10.666 kg.

So, 1 bundle 12mm steel bar weight = 1 piece 12mm weight × 5

= 10.666 × 5

= 53.33 kg.

So, the 12mm steel bar weight per bundle is 53.33 kg per bundle.

### Weight of 16 mm steel bar

**16mm steel rod weight per foot**

We have the diameter of the steel bar is 16mm, and the length of the steel bar is 1 foot.

So, 16 mm steel bar weight per foot = D^{2}L/533

= (16^{2}) 1/533

= 256/533 = 0.480 kg.

So, the 16mm steel bar weight per foot is 0.480 kg per foot.

**16 mm steel bar weight per meter**

The diameter of the steel bar is 16mm, and the length of the steel bar is 1 meter.

So, 16 mm steel bar weight per meter = D^{2}L/162

= (16^{2}) 1/162

= 256/162 = 1.58 kg.

So, the 16mm steel bar weight per meter is 1.58 kg per meter.

**16 mm steel bar weight per piece**

As we all know the standard length of a steel bar is 40 feet or 12 meters.

So 1 piece steel bar length = 12 meter, and diameter = 16mm

So, 16 mm steel bar weight per piece = D^{2}L/162

= (16^{2}) 12/162

= 3072/162 = 18.962 kg.

So, the 16mm steel bar weight per piece is 18.962 kg per piece.

**16 mm steel bar weight per bundle**

As we all know, the number of steel bars in 1 bundle of 16mm is 5.

So, a total weight of 12mm steel bar bundle = weight of 1 piece × 5

We have already calculated 12 mm steel bar weight per piece which is 10.666 kg.

So, 1 bundle 16mm steel bar weight = 1 piece 16mm weight × 3

= 18.962 × 3

= 56.886 kg.

So, the 16mm steel bar weight per bundle is 56.886 kg per bundle.

### Weight of 20 mm steel bar

**20mm steel rod weight per foot**

We have the diameter of the steel bar is 20mm, and the length of the steel bar is 1 foot.

So, 20 mm steel bar weight per foot = D^{2}L/533

= (20^{2}) 1/533

= 400/533 = 0.750 kg.

So, the 20mm steel bar weight per foot is 0.750 kg per foot.

**20 mm steel bar weight per meter**

The diameter of the steel bar is 20mm, and the length of the steel bar is 1 meter.

So, 20 mm steel bar weight per meter = D^{2}L/162

= (20^{2}) 1/162

= 400/162 = 2.469 kg.

So, the 20mm steel bar weight per meter is 2.469 kg per meter.

**20 mm steel bar weight per piece**

As we all know the standard length of a steel bar is 40 feet or 12 meters.

So 1 piece steel bar length = 12 meter, and diameter = 20mm

So, 20 mm steel bar weight per piece = D^{2}L/162

= (20^{2}) 12/162

= 4800/162 = 29.629 kg.

So, the 20mm steel bar weight per piece is 29.629 kg per piece.

**20 mm steel bar weight per bundle**

As we all know, the number of steel bars in 1 bundle of 20mm is 2.

So, a total weight of 20mm steel bar bundle = weight of 1 piece × 2

We have already calculated 20 mm steel bar weight per piece which is 29.629 kg.

So, 1 bundle 20mm steel bar weight = 1 piece 20mm weight × 2

= 29.629 × 2

= 59.258 kg.

So, the 20mm steel bar weight per bundle is 59.258 kg per bundle.

### Weight of 25 mm steel bar

**25mm steel rod weight per foot**

We have the diameter of the steel bar is 25mm, and the length of the steel bar is 1 foot.

So, 25 mm steel bar weight per foot = D^{2}L/533

= (25^{2}) 1/533

= 625/533 = 1.172 kg.

So, the 25mm steel bar weight per foot is 1.172 kg per foot.

**25 mm steel bar weight per meter**

The diameter of the steel bar is 25mm, and the length of the steel bar is 1 meter.

So, 25 mm steel bar weight per meter = D^{2}L/162

= (25^{2}) 1/162

= 625/162 = 3.858 kg.

So, the 25mm steel bar weight per meter is 3.858 kg per meter.

**25 mm steel bar weight per piece**

As we all know the standard length of a steel bar is 40 feet or 12 meters.

So 1 piece steel bar length = 12 meter, and diameter = 25mm

So, 25 mm steel bar weight per piece = D^{2}L/162

= (25^{2}) 12/162

= 7500/162 = 46.296 kg.

So, the 25mm steel bar weight per piece is 46.296 kg per piece.

### Weight of 32 mm steel bar

**32mm steel rod weight per foot**

We have the diameter of the steel bar is 32mm, and the length of the steel bar is 1 foot.

So, 32 mm steel bar weight per foot = D^{2}L/533

= (20^{2}) 1/533

= 1024/533 = 1.921 kg.

So, the 32mm steel bar weight per foot is 1.921 kg per foot.

**32 mm steel bar weight per meter**

The diameter of the steel bar is 32mm, and the length of the steel bar is 1 meter.

So, 32 mm steel bar weight per meter = D^{2}L/162

= (32^{2}) 1/162

= 1024/162 = 6.32 kg.

So, the 32mm steel bar weight per meter is 6.32 kg per meter.

**32 mm steel bar weight per piece**

As we all know the standard length of a steel bar is 40 feet or 12 meters.

So 1 piece steel bar length = 12 meter, and diameter = 32mm

So, 32 mm steel bar weight per piece = D^{2}L/162

= (32^{2}) 12/162

= 12288/162 = 75.851 kg.

So, the 32mm steel bar weight per piece is 75.851 kg per piece.

### Weight of 40 mm steel bar

**40mm steel rod weight per foot**

We have the diameter of the steel bar is 40mm, and the length of the steel bar is 1 foot.

So, 40 mm steel bar weight per foot = D^{2}L/533

= (40^{2}) 1/533

= 1600/533 = 3 kg.

So, the 40mm steel bar weight per foot is 3 kg per foot.

**40 mm steel bar weight per meter**

The diameter of the steel bar is 40mm, and the length of the steel bar is 1 meter.

So, 40 mm steel bar weight per meter = D^{2}L/162

= (40^{2}) 1/162

= 1600/162 = 9.876 kg.

So, the 40mm steel bar weight per meter is 9.876 kg per meter.

**40 mm steel bar weight per piece**

As we all know the standard length of a steel bar is 40 feet or 12 meters.

So 1 piece steel bar length = 12 meter, and diameter = 40mm

So, 40 mm steel bar weight per piece = D^{2}L/162

= (40^{2}) 12/162

= 19200/162 = 118.518 kg.

So, the 40mm steel bar weight per piece is 118.518 kg per piece.

#### Conclusion:

In this article, we have learned how to calculate the **weight of a steel bar**. And we have also calculated the weight of steel bars of different sizes in this article. I hope you like this article, share it with your friends who want to do any type of construction.