To calculate the weight of a 12mm rod (round bar) per piece, per meter, per foot, and per bundle, we’ll use the density of a common material like steel, which has a density of approximately 7850 Kilograms per cubic meter (kg/m³). We’ll also need to know the length of the rod and the number of pieces in a bundle (if applicable).

Physical characteristics of 12mm Rod (T12 Rebar) is: Imperial Bar Size: #4, “Soft” Metric Size: #12, weight per unit length: 0.668 pounds per foot (0.996 kilograms per meter), nominal diameter: 0.5 inches (12.7 millimeters), and nominal area: 0.2 square inches (129 square millimeters).

12mm Rod or steel bar also known as Rebar is short form of reinforcing bar. It is steel Rod or Steel wire provided as tension bar in concrete structure. It is used in reinforced concrete structure such as column, beam, foundation, reinforced masonry structure, bridges, Dams

and slab of house construction. It is used to enhance the tensile strength of concrete structure.

12mm Rod or steel bars or Reinforcing bar/rebar surface is often deformed with ribs to promote a better bonding with concrete material and reduce the risk of slippage. The most common Rods or Reinforcing bar/ rebar is carbon steel of hot rolled round bar with the deformation patterns, the Steel rebar/ Rod may be also coated with epoxy resin material, design to resist effect of corrosion mostly in saltwater environment.

As we know that different countries in the world have their own gradation, specification of Steel and record of measurement for reinforcing bar or Rods. First remember that rebar is measured differentially in United States and Europe. while the United states, it uses the Imperial measurement system. Europe and most of rest of world uses the metric system and measured in mm.

In this article we briefly explain 12mm Rod weight per piece: per meter, per foot. & per Bundle and how many 12mm Rods make a ton. This will help to viewers in better understanding and it is easy to choose the most suitable rebar or Rod weight per piece you wanted according to requirement.

Let us first know about length of one piece of 12mm Rod or steel bar, generally in India full length of one 12mm Steel bar or rod which are used in construction are available in 12 meter or approximately 40 feet long.

**12mm Rod weight per piece, per meter, per foot. & per Bundle**

The typical weight of 12mm Rod (steel, TMT bar) is about 10.4 kg per piece (for 12 meter or 40 feet full length), or 0.89 kilograms per meter, or 0.27 kilograms per foot, or between 51kg to 52kg per bundle. 1 Bundle of 12mm rod has 5 rods which weighs about 51 to 52kg. Approx 20 bundles (or 100 pieces) of 12mm rods (steel bars) comes in 1 ton of steel.

**12mm Rod weight per piece**

To calculate 12mm steel rod weight for 1 piece, use the formula D^2.L/ 162 to figure out weight or mass for 1 piece 12mm rod in kg, where D is the diameter of steel rod and L is the full length for 12 meter and numerical figure 162 is the thumb rule number which is derived. For example 12mm steel rod weight per piece = D^2 L/162, (12×12×12) ÷ 162 = 10.4 kgs, hence 10.4 kg is the weight of 12mm steel rod per piece.

The typical weight of 12mm Rod (T12, steel, TMT bar) is about 10.4 kg (kilograms) per piece for 12 meter or 40 feet full length). Use the Formula D^2 L/162 to calculate weight of T12 Rod i.e. 12mm rod weight per piece = D^2 L/162 = (12×12×12) ÷ 162 = 10.4 kgs. Thus, 12mm Rod weight is about 10.4 kilograms per piece for 12 meter full length.

**12mm Rod weight per meter**

To calculate 12mm steel rod weight per meter, use the formula D^2.L/162 to figure out unit weight or mass of 12mm rod in kg per meter (kg/m), where D is the diameter of steel rod and L is the unit length for 1 meter and numerical figure 162 is the thumb rule number which is derived. For example 12mm steel rod weight per meter = D^2L/162, (12×12×1) ÷ 162 = 0.89kgs/m, hence 0.89 kg is the 12mm steel rod weight per meter.

The typical weight of 12mm Rod (T12, steel, TMT bar) is about 0.89 kg (kilograms) per meter (Or 0.89 kg/m for 1 meter unit length ). Use the Formula D^2 L/162 to calculate weight of T12 Rod per meter i.e. 12mm rod weight per meter = D^2 L/162 = (12×12×1) ÷ 162 = 0.88 kgs. Thus, 12mm Rod weight is about 0.89 kilograms per meter (Or 0.89 kg/m).

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**12mm Rod weight per foot**

To calculate 12mm steel rod weight per foot, use the formula D^2.L/ 533 to figure out unit weight or mass of 12mm rod in kg per foot (kg/ft), where D is the diameter of steel rod and L is the unit length for 1 foot and numerical figure 533 is the thumb rule number which is derived. For example 12mm steel rod weight per foot = D^2L/533, (12×12×1) ÷ 533 = 0.27 kgs/ft, hence 0.27 kg is the 12mm steel rod weight per foot.

The typical weight of 12mm Rod (T12, steel, TMT bar) is about 0.27 kg (kilograms) per foot (Or 0.89 kg/ft for 1 foot unit length ). Use the Formula D^2 L/533 to calculate weight of T12 Rod per foot i.e. 12mm rod weight per foot = D^2 L/162 = (12×12×1) ÷ 533 = 0.27 kgs. Thus, 12mm Rod weight is about 0.27 kilograms per foot (Or 0.89 kg/ft).

**● Unit weight of steel bars: (8mm, 10mm, 12mm, 16mm & 20mm)**

**● Rod weight per bundle: 12mm, 10mm, 8mm, 16mm, 20mm & 25mm steel bar**

**12mm Rod weight per bundle**

To calculate 12mm steel rod weight per bundle, use the formula D^2.L.N/162 to figure out weight or mass of 12mm rod per bundle in kg per, where D is the diameter of steel rod and L is the full length for 12 meter, N = 5 is number of 12mm Rods per bundle and numerical figure 162 is the thumb rule number which is derived. For example 12mm steel rod weight per bundle = D^2LN/ 162, (12×12×12×5) ÷ 162 = 52kg, hence 52 kg is the 12mm steel rod weight per bundle.

The typical weight of 12mm Rod (T12, steel, TMT bar) is between 51kg to 52kg per bundle. Thus, 1 Bundle of 12mm rod has 5 rods which weighs about 51 to 52kg. Use the Formula D^2 LN/162 to calculate weight of T12 Rod per bundle i.e. 12mm rod weight per bundle = D^2 LN/162 = (12×12×12 ×5) ÷ 162 = 52 kgs. Thus, 12mm Rod weight is about 52 kilograms per bundle.

**How many 12mm Rods make a ton**

Each bundle of 12mm rod comprises 5 rods, and the 12mm rod weight is somewhere in the range of 51 to 52 kg. So, 20 bundles or approximately 100 pieces of 12mm rods make a ton (1000kg). Thus, 1 ton comprises approximately 20 bundles of 12mm rod.

**How many kg is 12mm Rod steel?**

The 12mm steel or (Rod, TMT bar) weight is about 10.4 kg per piece of 12 meter full length, or 0.89 kilograms per meter, or 0.27 kilograms per foot. 1 Bundle of 12 mm steel bar has 5 rods which weighs about 51 to 52kg. Approx 20 bundles of 12mm steel bars comes in 1 ton of steel.

**Conclusion:**

The typical weight of 12mm Rod is about 10.4 kg per piece for 12m full length, or 0.89 kilograms per meter, or 0.27 kilograms per foot, or between 51kg to 52kg per bundle.