Conversion Table

ASTM STANDARD IMPERIAL REINFORCING BARS
BAR SIZE
DESIGNATION		 NOMINAL DIMENSIONS
AREA(IN.2) WEIGHT(LB/FT) DIAMETER(IN)
#3 0.11 0.376 0.375
#4 0.20 0.668 0.500
#5 0.31 1.043 0.625
#6 0.44 1.502 0.750
#7 0.60 2.044 0.875
#8 0.79 2.670 1.000
#9 1.00 3.400 1.128
#10 1.27 4.303 1.270
#11 1.56 5.313 1.410
#14 2.25 7.65 1.693
#18 4.00 13.60 2.257
Current A615 specification covers bar sizes #14 and #18 in Grade 60, and bar sizes #11, #14 and #18 in Grade 75. Current A706 specification also covers bar sizes #14 and #18. Bar sizes #9 through #18 are not included in the A996 specification.
ASTM STANDARD METRIC REINFORCING BARS
BAR SIZE
DESIGNATION		 NOMINAL DIMENSIONS
AREA(MM.2) WEIGHT(KG/M) DIAMETER(MM)
#10 71 0.560 9.5
#13 129 0.994 12.7
#16 199 1.522 15.9
#19 284 2.235 19.1
#22 387 3.042 22.2
#25 510 3.973 25.4
#29 645 5.060 28.7
#32 819 6.404 32.3
#36 1006 7.907 35.8
#43 1452 11.38 43.0
#57 2581 20.24 57.3
Current A615M specification covers bar sizes #43 and #57 in Grade 420, and bar sizes #36, #43 and #57 in Grade 520. Current A706 specification also covers bar sizes #43 and #57. Bar sizes #29 through #57 are not included in the A996M specification.
COMPARISON BETWEEN W&D NUMBER WIRE SIZES AND STEEL WIRE GAGES
W&D NUMBER WIRE SIZES STEEL WIRE GAGES
Size Number Area, Sq. In. Nom. Dia., In Nom. Dia.,In. Area, Sq In. Gage Number
1.4 0.014 0.135 0.135 0.014 10
1.5 0.015 0.138
0.148 0.017 9
2 0.02 0.159
0.162 0.021 8
2.5 0.025 0.178 0.177 0.025 7
2.9 0.029 0.192 0.192 0.029 6
3 0.03 0.195
0.207 0.034 5
3.5 0.035 0.211
4 0.04 0.225 0.225 0.04 4
0.235 0.043 3 1/2
4.5 0.045 0.240
0.244 0.047 3
5 0.05 0.252 0.253 0.05 21/2
0.2625 0.0545 2
5.5 0.055 0.264
0.273 0.059 11/2
6 0.06 0.276
0.283 0.063 1
6.5 0.065 0.288
0.295 0.068 1/01/2
7 0.07 0.298
0.3065 0.074 1/0
7.5 0.075 0.309
8 0.08 0.319 0.319 0.08 2/01/2
8.5 0.085 0.329
0.331 0.086 2/0
9 0.09 0.338
9.5 0.095 .0348 0.347 0.095 3/01/2
10 0.10 0.356
0.3625 0.103 3/0
10.5 0.105 0.366
11 0.11 0.374
0.378 0.112 4/01/2
12 0.12 0.390
0.394 0.122 4/0
14 0.14 0.422
0.4305 0.146 5/0
16 0.16 0.451
18 0.18 0.478 0.4615 0.167 6/0
20 0.20 0.504 0.490 0.189 7/0
20.5 0.205 0.511