Free Concrete Column Calculator
Calculate the concrete volume and rebar requirements for a rectangular or round concrete column.
in
in
ft
Concrete Volume
0.37 cu yd
Concrete Volume10.0 cu ft
Total Rebar Length48 ft
Concrete Volume vs Width / Diameter
Concrete Column Volume
Rectangular: V = W x D x H
Round: V = pi x (D/2) squared x H
Convert all dimensions to consistent units. Add 2 ft per bar for lap splices and embedment into the footing. Vertical rebar count must be at least 4 for rectangular columns and 6 for round columns per ACI 318.
Example Calculation
12 x 12 in rectangular column, 10 ft tall, 4 bars.
- 01Area = 12 x 12 = 144 sq in = 1 sq ft
- 02Volume = 1 x 10 = 10 cu ft = 0.37 cu yd
- 03Rebar = 4 x (10 + 2) = 48 ft
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