Rebar Grid Calculator

Rebar quantity for gunite/shotcrete pool shell.

Pool length (ft)

Pool width (ft)

Shallow end depth (ft)

Deep end depth (ft)

Rebar size (#3, #4, #5)

Grid spacing (inches)

Lap splice length (in)

Tab to move between fields

Total rebar (linear ft)

2,308

Total weight (lbs)868

Total weight (tons)0.43

20-ft sticks needed116

Shell surface area (sq ft)968

Floor rebar (linear ft)945

Wall rebar (linear ft)1,153

How to Use This Calculator

Enter the pool interior length, width, shallow end depth, and deep end depth in feet.
Select rebar size: #3 (3/8 in, most common), #4 (1/2 in), or #5 (5/8 in for heavy construction).
Set the grid spacing in inches — 12 inches on center is the residential standard.
Set the lap splice length — typically 24 inches for #3 rebar.
Review Total Rebar (linear ft), Total Weight, and 20-ft Sticks Needed to order material.

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