The weight of rebar (reinforcing bar) per foot depends on its diameter or size. Rebar is typically sold by its size, which is specified in terms of a number. The most common sizes of rebar used in construction are #3, #4, #5, #6, #7, #8, #9, #10, #11, #14, and #18.

Here are the approximate weights per foot for some common rebar sizes in pounds per foot (lb/ft): #3 Rebar: 0.376 lb/ft, #4 Rebar: 0.668 lb/ft, #5 Rebar: 1.043 lb/ft, #6 Rebar: 1.502 lb/ft, #7 Rebar: 2.044 lb/ft, #8 Rebar: 2.670 lb/ft, ,#9 Rebar: 3.400 lb/ft, #10 Rebar: 4.303 lb/ft, #11 Rebar: 5.313 lb/ft, #14 Rebar: 7.65 lb/ft and #18 Rebar: 13.6 lb/ft.

The weight of rebar (reinforcing bar) per foot can vary depending on its diameter. A common rule of thumb is that one linear foot of rebar with a diameter of 1/2 inch (or #4 rebar) weighs approximately 0.67 pounds. Here are the approximate weights for some other common rebar sizes per linear foot:

* #3 rebar (3/8 inch diameter): Approximately 0.376 pounds per foot.

* #5 rebar (5/8 inch diameter): Approximately 1.043 pounds per foot.

* #6 rebar (3/4 inch diameter): Approximately 1.502 pounds per foot.

* #8 rebar (1 inch diameter): Approximately 2.67 pounds per foot.

What is rebar/ reinforcing bar?, Rebar is short form of reinforcing bar, it is steel bar or Steel wire provided as tension bar, used in reinforced concrete structure like column, beam and slab of house construction and it also used in reinforced masonry structure. It is used to increase the tensile strength of concrete structure.

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 Reinforcing bar/rebar is carbon steel of hot rolled round bar with the deformation patterns, the Steel rebar may be also coated with epoxy resin material, design to resist effect of corrosion mostly in saltwater environment.

US based steel/ reinforcing bar sizes and their diameter, as we know that different countries in the world have their own gradation, specification of Steel and record of measurement for reinforcing bar. 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.

A #3 rebar, which is 3/8 of an inch in diameter, typically weighs approximately 0.376 pounds per foot. A #4 rebar, which is 1/2 of an inch in diameter, typically weighs approximately 0.668 pounds per foot. A #5 rebar, which is 5/8 of an inch in diameter, typically weighs approximately 1.043 pounds per foot. A #6 rebar, which is 3/4 of an inch in diameter, typically weighs approximately 1.502 pounds per foot. A #7 rebar, which is 7/8 of an inch in diameter, typically weighs approximately 2.044 pounds per foot. Please note that this is an approximate weight, and the actual weight may vary slightly depending on the manufacturer and specific grade of rebar.

In this article we briefly explain “Rebar weight per foot: (#3, #4, #5, #6, #7, #8, #9 & #10)”, based on Imperial measurement system. This will help to viewers in better understanding and it is easy to choose the most suitable rebar you wanted according to requirement.

Imperial rebar size/ Reinforcing bar size

US/ imperial rebar sizes gives the diameter in units of 1/8 inch (3.2mm), for bar sizes #2 to #10 we use this formula, for example size of number 2 (#2) rebar is of 1/8 inch in metric system measurement, such that 2×1/8 inch = 0.25 inch or 6mm.

**Rebar weight per foot: (#3, #4, #5, #6, #7, #8, #9 & #10)**

The size of the rebar/ Reinforcing bar used in construction work in number 3 rebar (10mm), number 4 rebar (12mm), number 5 rebar (16mm), number 6 rebar (20mm), number 8 rebar (25mm), number 9 rebar (28mm) and number 10 rebar (32mm).

**Rebar weight per foot:-** #2.5 rebar (8 mm rebar) weighs 0.265 pounds per foot. #3 rebar weighs 0.376 pounds per foot. #4 rebar weighs 0.668 pounds per foot. #5 rebar weighs 1.043 pounds per foot. #6 rebar weighs 1.502 pounds per foot. #7 rebar weighs 2.044 pounds per foot. #8 rebar weighs 2.670 pounds per foot. #9 rebar weighs 3.40 pounds per foot. #10 rebar weighs 4.303 pounds per foot.

**Rebar weight**:- weight of number 2.5 rebar/ reinforcing bar or 8 mm rebar will 0.265 lbs per foot, for #3 rebar it will be 0.376 lbs, for #4 rebar it will be 0.668 lbs, for #5 rebar it will be 1.043 lbs, for #6 rebar it will be 1.502 lbs, for #7 rebar it will be 2.044 lbs, for #8 rebar it will be 2.670 lbs, for #9 rebar it will be 3.40 lbs and for #10 rebar it will be 4.303 lbs/ foot.

**Rebar weight per foot**:- weight of number 2.5 rebar/ reinforcing bar will 0.265 lbs per foot, #3 rebar will be 0.376 lbs, #4 rebar will be 0.668 lbs, #5 rebar will be 1.043 lbs, #6 rebar will be 1.502 lbs, #7 rebar will be 2.044 lbs, #8 rebar will be 2.670 lbs, #9 rebar will be 3.40 lbs and #10 rebar will be 4.303 lbs per foot.

**Weight rebar per foot**:- Weight of #4 rebar will be 0.668 lbs per foot, #2.5 rebar/ reinforcing bar will 0.265 lbs per foot, #3 rebar will be 0.376 lbs per foot, #5 rebar will be 1.043 lbs per foot, #6 rebar will be 1.502 lbs per foot, #7 rebar will be 2.044 lbs per foot, #8 rebar will be 2.670 lbs per foot, #9 rebar will be 3.40 lbs per foot and #10 rebar will be 4.303 lbs per foot.

**Formula for rebar weight calculation**

To find the weight of rebar/reinforcing bar per foot in length you have to just apply a simple formula – (Diameter)*(Diameter) / 533 Kg/foot or D^2/533, where D is diameter of rebar in mm.

**Rebar weight per foot:-** #2.5 rebar (8 mm rebar) weighs 0.265 pounds per foot. #3 rebar weighs 0.376 pounds per foot. #4 rebar weighs 0.668 pounds per foot. #5 rebar weighs 1.043 pounds per foot. #6 rebar weighs 1.502 pounds per foot. #7 rebar weighs 2.044 pounds per foot. #8 rebar weighs 2.670 pounds per foot. #9 rebar weighs 3.40 pounds per foot. #10 rebar weighs 4.303 pounds per foot.

**Weight of #2.5 rebar per foot**

**#2.5 rebar weight per foot**:- weight of #2.5 rebar / number 2.5 rebar/ reinforcing bar or 8 mm rebar will be 0.265 pounds per foot ( 0.39 kilograms per meter ) or which is approximately equal as 0.12 kg/foot (8×8)/ 533 = 0.12 kg/ foot).

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**Weight of #3 rebar per foot**

**#3 rebar weight per foot:-** weight of #3 rebar / number 3 rebar / reinforcing bar or 3/8″ (10 mm) rebar will be 0.376 pounds per foot (0.561 kilograms per meter ) or which is approximately equal as 0.1876 kg/foot (10×10)/ 533 = 0.1876 kg/ foot).

**Physical characteristics of #3 rebar**

- Imperial bar size – #3 or 3/8″

● soft metric size – #10 or 10mm

● #4 rebar weight per foot – 0.376 lbs/ft

● #4 rebar weight per meter – 0.559 kg/m

● nominal diameter – 3/8″ or 9.525mm

● nominal area – 0.11 sq inches (71mm2)

● 20 ft rebar weight – 7.52 lbs

● 30 ft rebar weight – 11.28 lbs

● 40 ft rebar weight – 15.04 lbs

● 60 ft rebar weight – 22.56 lbs

● weight per unit length – 0.376 lb/ft (0.559 kg/m)

● 20 ft pieces per ton – 266

● 30 ft pieces per ton – 177.3

● 40 ft pieces per ton – 133

● 60 ft pieces per ton – 88.7

**Weight of #4 rebar per foot**

**#4 rebar weight per foot:-** weight of #4 rebar / number 4 rebar / reinforcing bar or 1/2″ (12 mm) rebar will be 0.668 pounds per foot (0.996 kilograms per meter ) or which is approximately equal as 0.270 kilogram per foot {(12×12)/ 533 = 0.270 kg/ foot)}.

**Physical characteristics of #4 rebar**

- Imperial bar size – #4 or 1/2″

● soft metric size – #13 or 13mm

● #4 rebar weight per foot – 0.668 lbs/ft

● #4 rebar weight per meter – 0.996 kg/m

● nominal diameter – 1/2″ or 12.7mm

● nominal area – 0.2 sq inches (129mm2)

● 20 ft rebar weight – 13.36 lbs

● 30 ft rebar weight – 20.04 lbs

● 40 ft rebar weight – 26.72 lbs

● 60 ft rebar weight – 40.08 lbs

● weight per unit length – 0.668 lb/ft (0.996 kg/m).

● 20 ft pieces per ton – 149.7

● 30 ft pieces per ton – 99.8

● 40 ft pieces per ton – 74.9

● 60 ft pieces per ton – 49.9

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**Weight of #5 rebar per foot**

**#5 rebar weight per foot:-** weight of #5 rebar / number 5 rebar / reinforcing bar or 5/8″ (16 mm) rebar will be 1.043 pounds per foot ( 1.556 kilograms per meter ) or which is approximately equal as 0.48 kg/foot {(16×16)/ 533 = 0.48 kg/ foot)}.

**Physical characteristics of #5 rebar**

- Imperial bar size – #5 or 5/8″

● soft metric size – #16 or 16mm

● #4 rebar weight per foot – 1.043 lbs/ft

● #4 rebar weight per meter – 1.55 kg/m

● nominal diameter – 5/8″ or 15.875mm

● nominal area – 0.39 sq inches (252mm2)

● 20 ft rebar weight – 20.86 lbs

● 30 ft rebar weight – 31.29 lbs

● 40 ft rebar weight – 41.72 lbs

● 60 ft rebar weight – 62.58 lbs

● weight per unit length – 1.043 lb/ft (1.55 kg/m)

● 20 ft pieces per ton – 95.9

● 30 ft pieces per ton – 63.9

● 40 ft pieces per ton – 47.9

● 60 ft pieces per ton – 32

**Weight of #6 rebar per foot**

**#6 rebar weight per foot:-** weight of #6 rebar / number 6 rebar / reinforcing bar or 3/4″ (20 mm) rebar will be 1.502 pounds per foot ( 2.24 kilograms per meter ) or which is approximately equal as 0.75 kg/foot {(20×20)/ 533 = 0.75 kg/ foot)}.

**Physical characteristics of #6 rebar**

- Imperial bar size – #6 or 3/4″

● soft metric size – #19 or 19mm

● #4 rebar weight per foot – 1.502 lbs/ft

● #4 rebar weight per meter – 2.234 kg/m

● nominal diameter – 3/4″ or 19.05mm

● nominal area – 0.44 sq inches (285mm2)

● 20 ft rebar weight – 30.04 lbs

● 30 ft rebar weight – 45.06 lbs

● 40 ft rebar weight – 60.08 lbs

● 60 ft rebar weight – 90.12 lbs

● weight per unit length – 1.502 lb/ft (2.234 kg/m)

● 20 ft pieces per ton – 66.6

● 30 ft pieces per ton – 44.4

● 40 ft pieces per ton – 33.3

● 60 ft pieces per ton – 22.2

**Weight of #7 rebar per foot**

**#7 rebar weight per foot:-** weight of #7 rebar / number 7 rebar/ reinforcing bar or 22 mm rebar will be 2.044 pound per foot ( 3.049 kilogram per meter ) or which is approximately equal as (22×22)/533 = 0.908 kg/ foot or when it measured in pounds, then it will be 2.044 lbs/foot.

**Physical characteristics of #7 rebar**

- Imperial bar size – #7 or 7/8″

● soft metric size – #22 or 22mm

● #4 rebar weight per foot – 2.044 lbs/ft

● #4 rebar weight per meter – 3.04 kg/m

● nominal diameter – 7/8″ or 22.225mm

● nominal area – 0.765 sq inches (494mm2)

● 20 ft rebar weight – 40.88 lbs

● 30 ft rebar weight – 61.32 lbs

● 40 ft rebar weight – 81.76 lbs

● 60 ft rebar weight – 122.64 lbs

● weight per unit length – 2.044 lb/ft (3.04 kg/m)

● 20 ft pieces per ton – 48.9

● 30 ft pieces per ton – 32.6

● 40 ft pieces per ton – 24.5

● 60 ft pieces per ton – 16.3

**Weight of #8 rebar per foot**

**#8 rebar weight per foot:-** weight of #8 rebar / number 8 rebar/ reinforcing bar or 25 mm rebar will be 2.670 pound per foot ( 3.982 kilogram per meter ) or which is approximately equal as (25×25)/533= 1.173kg/ foot or when it measured in pounds, then it will be 2.670 lbs/foot.

**Physical characteristics of #8 rebar**

- Imperial bar size – #8 or 1″

● soft metric size – #25 or 25mm

● #4 rebar weight per foot – 2.67 lbs/ft

● #4 rebar weight per meter – 3.97 kg/m

● nominal diameter – 1″ or 25mm

● nominal area – 1 sq inches (645.16mm2)

● 20 ft rebar weight – 53.40 lbs

● 30 ft rebar weight – 80.10 lbs

● 40 ft rebar weight – 106.80 lbs

● 60 ft rebar weight – 160.20 lbs

● weight per unit length – 2.67 lb/ft (3.97 kg/m)

● 20 ft pieces per ton – 37.5

● 30 ft pieces per ton – 25

● 40 ft pieces per ton – 18.7

● 60 ft pieces per ton – 12.5

**Weight of #9 rebar per foot**

**#9 rebar weight per foot:-** weight of #9 rebar / number 9 rebar/ reinforcing bar or 28mm rebar will be 3.40 pound per foot ( 5.701 kilogram per meter ) or which is approximately equal as (28×28)/533 = 1.47 kg/foot or when it measured in pounds, then it will be 3.40 lbs/foot.

**Weight of #10 rebar per foot**

**#10 rebar weight per foot:-** weight of #10 rebar / number 10 rebar or 32 mm rebar/ reinforcing bar will be 4.303 pounds per foot ( 6.418 kilogram per meter )or which is approximately equal as (32×32)/533 = 1.92 kg/ foot or when it measured in pounds, then it will be 4.303 lbs/foot.

Weight of number 11 (#11) rebar or 36 mm rebar per foot will be (36×36)/ 533= 2.43 kg/ foot or when it measured in pounds, then it will be 5.313 lbs/foot.

**Unit weight of rebar in kg/ft**

Unit weight of rebar is defined as mass per unit length, if weight reinforcing bar/ rebar measured in Kilogram per foot known as Unit weight of rebar in kg/ ft.

Unit Weight of 8mm rebar is 0.12kg/foot, for 10mm rebar, it could be 0.1876kg/foot, for 12mm rebar, it could be 0.27kg/ft, for 16mm rebar, it could be 0.48kg/ft, for 20mm rebar, it could be 0.75kg/ foot, for 22mm rebar, it could be 0.90kg/ ft, for 25mm rebar, it could be 1.173kg/ foot, for 28mm rebar, it could be 1.47kg/ foot, for 32mm rebar, it could be 1.92kg/ foot and unit weight for 36mm rebar, it could be 2.43 kg/foot.

**Unit weight of rebar in lb/ft**

Unit weight of rebar is defined as mass per unit length, if weight reinforcing bar/ rebar measured in pounds per foot known as Unit weight of rebar in lb/ ft.

Unit Weight of 8mm or #2.5 rebar is 0.265lb/foot, for 10mm or #3 rebar, it could be 0.376lb/foot, for 12mm or #4 rebar, it could be 0.668lb/ft, for 16mm or #5 rebar, it could be 1.043lb/ft, for 20mm or #6 rebar, it could be 1.502lb/ foot, for 22mm or #7 rebar, it could be 2.044lb/ ft, for 25mm or #8 rebar, it could be 2.67lb/ foot, for 28mm or #9 rebar, it could be 3.40lb/ foot, for 32mm or #10 rebar, it could be 4.303lb/ foot and unit weight for 36mm or #11 rebar, it could be 5.313lb/foot.

** ****Conclusion:-**

Weight of #2.5 rebar will be 0.265 pound per foot. #3 rebar weighs 0.376 pound per foot. #4 rebar weighs 0.668 pound per foot. #5 rebar weighs 1.043 pound per foot. #6 rebar weighs 1.502 pounds per foot. #7 rebar weighs 2.044 pound per foot. #8 rebar weighs 2.670 pound per foot. #9 rebar weighs 3.40 pound per foot and #10 rebar weighs 4.303 pounds per foot.