U.S. STANDARD REINFORCING STEEL BARS

Bar Size Designation

Area Weight Diametersquare inches

square meters lb/ft kg/m inches mm m

#3 0.11 0.00007097 0.376 0.56 0.375 9.53 0.0095#4 0.20 0.00012903 0.668 0.99 0.500 12.70 0.0127#5 0.31 0.00020000 1.043 1.55 0.625 15.88 0.0159#6 0.44 0.00028387 1.502 2.24 0.750 19.05 0.0191#7 0.60 0.00038710 2.044 3.04 0.875 22.23 0.0222#8 0.79 0.00050968 2.670 3.97 1.000 25.40 0.0254#9 1.00 0.00064516 3.400 5.06 1.128 28.65 0.0287

#10 1.27 0.00081935 4.303 6.40 1.270 32.26 0.0323#11 1.56 0.00100645 5.313 7.91 1.410 35.81 0.0358#14 2.25 0.00145161 7.650 11.38 1.693 43.00 0.0430#18 4.00 0.00258064 13.600 20.24 2.257 57.33 0.0573

METRIC REINFORCING BARS

Bar Size Designation

Area Weight Diametersquare inches

square meters lb/ft kg/m inches mm m

10m 0.16 0.0001 0.527 0.784 0.445 11.3 0.011315m 0.31 0.0002 1.054 1.569 0.630 16.0 0.016020m 0.47 0.0003 1.563 2.326 0.768 19.5 0.019525m 0.78 0.0005 2.606 3.878 0.992 25.2 0.025230m 1.09 0.0007 3.649 5.430 1.177 29.9 0.029935m 1.55 0.0010 5.213 7.758 1.406 35.7 0.035745m 2.33 0.0015 7.820 11.637 1.710 43.4 0.043455m 3.88 0.0025 13.034 19.397 2.220 56.4 0.0564