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Rebar sizes
Canadian Metric sizes
Metric bar designations represent the nominal bar diameter in
millimetres, rounded to the nearest 5 mm.
| Metric
Bar Size |
Mass
(kg/m) |
Nominal Diameter
(mm) |
Cross-Sectional
Area (mm2) |
| #10 M |
0.785 |
11.3 |
100 |
| #15 M |
1.570 |
16.0 |
200 |
| #20 M |
2.355 |
19.5 |
300 |
| #25 M |
3.925 |
25.2 |
500 |
| #30 M |
5.495 |
29.9 |
700 |
| #35 M |
7.850 |
35.7 |
1000 |
| #45 M |
11.775 |
43.7 |
1500 |
| #55 M |
19.625 |
56.4 |
2500 |
US Imperial sizes
Imperial bar designations represent the bar diameter in
fractions of ⅛ inch, such that #8 = 8⁄8
inch = 1 inch diameter. This convention applies to #8 and
smaller bars only.
| Imperial
Bar Size |
"Soft"
Metric Size |
Weight
(lb⁄ft) |
Weight
(kg/m) |
Nominal Diameter
(in) |
Nominal Diameter
(mm) |
Nominal Area
(in˛) |
Nominal Area
(mm˛) |
| #3 |
#10 |
0.376 |
0.561 |
0.375 |
9.525 |
0.11 |
71 |
| #4 |
#13 |
0.668 |
0.996 |
0.500 |
12.7 |
0.20 |
129 |
| #5 |
#16 |
1.043 |
1.556 |
0.625 |
15.875 |
0.31 |
200 |
| #6 |
#19 |
1.502 |
2.24 |
0.750 |
19.05 |
0.44 |
284 |
| #7 |
#22 |
2.044 |
3.049 |
0.875 |
22.225 |
0.60 |
387 |
| #8 |
#25 |
2.670 |
3.982 |
1.000 |
25.4 |
0.79 |
509 |
| #9 |
#29 |
3.400 |
5.071 |
1.128 |
28.65 |
1.00 |
645 |
| #10 |
#32 |
4.303 |
6.418 |
1.270 |
32.26 |
1.27 |
819 |
| #11 |
#36 |
5.313 |
7.924 |
1.410 |
35.81 |
1.56 |
1006 |
| #14 |
#43 |
7.650 |
11.41 |
1.693 |
43 |
2.25 |
1452 |
| #18 |
#57 |
13.60 |
20.284 |
2.257 |
57.33 |
4.00 |
2581 |
European Metric sizes
Metric bar designations represent the nominal bar diameter in
millimetres. Bars in Europe will be specified to comply with the
standard EN 10080 (awaiting introduction as of early 2007),
although various national standards still remain in force (e.g.
BS 4449 in the United Kingdom).
| Metric
Bar Size |
Mass
(kg/m) |
Nominal Diameter
(mm) |
Cross-Sectional
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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