Rebar Weight and Size Calculator

Calculate the weight and size of the rebar for your project given the length and quantity.

Results:

Total Weight

 
lbs
 
tons

Total Length

 
ft

Weight per Foot

 
lbs
Learn how we calculate this below

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Sarabeth is an expert in the home and garden industry and was formerly a certified kitchen and bathroom designer. She is a subject matter expert in home improvement and is often quoted in notable publications.

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How to Find the Size and Weight of Rebar

Stacks of rebar with a considerable amount of weight

Rebar, or reinforcing bar, is used in many masonry and concrete projects to reinforce slabs and structures. Because concrete has low compressive strength, rebar helps it bear loads without cracking.

Therefore, for most concrete projects, rebar is required to help the slab, footer, or foundation maintain its structural integrity. Rebar is available in standard sizes, making it easy to find the weight and dimensions of the rebar for your project.

The first step is to identify which size of rebar is being used on the project, for example, a #3 rebar. Most home and residential projects will use #3, #4 or #5 rebar, with #3 being used most commonly for patios and driveways, #4 for walls and columns, and #5 for footers and foundations.

The next step is to identify how much linear footage of rebar will be used. Linear footage is the total amount of length in 12″ increments needed for the project.

For example, if you need 20 pieces of 60′ rebar, you will need 1,200 linear feet of material. Rebar is typically sold in 20′, 30′, 40′, and 60′ lengths, but it is possible to order custom lengths as well.

You can use our rebar material calculator to find out how much rebar you need for your project. Alternatively, multiply the length of rebar by the quantity used to find the linear footage. Learn more about how to find linear footage.

Refer to the charts below for the dimensions for each size of rebar. Find the diameter and area of the rebar along with the weight per linear foot. To find the total weight, multiply the total length of rebar – total linear feet of material used – with the weight per linear foot if measured in feet, or weight per meter if measured in meters.

US Rebar Weight and Dimensions

US rebar sizes and dimensions
Imperial Bar Size “Soft” Metric Size Weight Nominal Diameter Nominal Area
lb/ft kg/m inch mm inch2 mm2
#2 #6 0.167 0.249 0.250 = 1/4“ 6.35 0.05 32
#3 #10 0.376 0.561 0.375 = 3/8“ 9.525 0.11 71
#4 #13 0.668 0.996 0.500 = 1/2“ 12.7 0.20 129
#5 #16 1.043 1.556 0.625 = 5/8“ 15.875 0.31 200
#6 #19 1.502 2.24 0.750 = 3/4“ 19.05 0.44 284
#7 #22 2.044 3.049 0.875 = 7/8“ 22.225 0.60 387
#8 #25 2.670 3.982 1.000 = 1″ 25.4 0.79 509
#9 #29 3.400 5.071 1.128 = 1 1/8“ 28.65 1.00 645
#10 #32 4.303 6.418 1.270 = 1 1/4“ 32.26 1.27 819
#11 #36 5.313 7.924 1.410 = 1 3/8“ 35.81 1.56 1006
#14 #43 7.650 11.41 1.693 = 1 3/4“ 43 2.25 1452
#18 #57 13.60 20.284 2.257 = 2 1/4“ 57.3 4.00 2581

Canadian Rebar Weight and Dimensions

Canadian rebar sizes and dimensions
Metric Bar Size Weight
kg/m		 Nominal Diameter
mm		 Nominal Area
mm2
10M 0.785 11.3 100
15M 1.570 16.0 200
20M 2.355 19.5 300
25M 3.925 25.2 500
30M 5.495 29.9 700
35M 7.850 35.7 1000
45M 11.775 43.7 1500
55M 19.625 56.4 2500

European Rebar Weight and Dimensions

European rebar sizes and dimensions
Metric Bar Size Weight
kg/m		 Nominal Diameter
mm		 Nominal Area
mm2
6,0 0.222 6 28.3
8,0 0.395 8 50.3
10,0 0.617 10 78.5
12,0 0.888 12 113
14,0 1.21 14 154
16,0 1.58 16 201
20,0 2.47 20 314
25,0 3.85 25 491
28,0 4.83 28 616
32,0 6.31 32 804
40,0 9.86 40 1257
50,0 15.4 50 1963

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