Rebar Weight and Size Calculator

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

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Learn How to Find the Size and Weight of Rebar

Find the weight of rebar material by multiplying the total length by the pounds per foot for the size of rebar needed

Rebar, or reinforcing bar, is used in many masonry and concrete projects to reinforce slabs and structures. It is available in standard sizes, thus it is 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.

The next step is to identify how much linear footage of rebar will be used. 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 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