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Reference tables

Rebar sizes

Every reinforcing bar size in Enginus's rebar library — metric and US — with area, weight, perimeter and area-per-width spacing tables. Search by size, e.g. “16” or “#5”.

23 pages

Metric bars (Eurocode) (12)

Nominal diameters in millimetres, as used with EN 1992-1-1.

Ø6 mm
Area 28.3 mm²
Ø8 mm
Area 50.3 mm²
Ø10 mm
Area 78.5 mm²
Ø12 mm
Area 113.1 mm²
Ø14 mm
Area 153.9 mm²
Ø16 mm
Area 201.1 mm²
Ø20 mm
Area 314.2 mm²
Ø25 mm
Area 490.9 mm²
Ø28 mm
Area 615.8 mm²
Ø32 mm
Area 804.2 mm²
Ø40 mm
Area 1,256.6 mm²
Ø50 mm
Area 1,963.5 mm²

US bars (ACI / ASTM) (11)

ASTM bar designations (#3–#18), as used with ACI 318.

#3 bar
Ø 0.375 in · 0.11 in²
#4 bar
Ø 0.500 in · 0.20 in²
#5 bar
Ø 0.625 in · 0.31 in²
#6 bar
Ø 0.750 in · 0.44 in²
#7 bar
Ø 0.875 in · 0.60 in²
#8 bar
Ø 1.000 in · 0.79 in²
#9 bar
Ø 1.128 in · 1.00 in²
#10 bar
Ø 1.270 in · 1.27 in²
#11 bar
Ø 1.410 in · 1.56 in²
#14 bar
Ø 1.693 in · 2.25 in²
#18 bar
Ø 2.257 in · 4.00 in²
Working out an area or spacing? Use the Rebar Calculator.