How far apart should stakes be?

Typically every 3–5 feet depending on form height and soil stability.

How much bracing is needed?

One brace per 8–10 linear feet is typical.

Yes, clean and store them properly for reuse.

Estimate boards, stakes, and bracing in seconds

Use this formwork calculator to estimate perimeter, board footage, stakes, and bracing for slabs and footings.

Length (ft) Width (ft) Form Height (ft) Stake Spacing (ft)

Enter the slab or footing dimensions and stake spacing to estimate perimeter, board footage, stakes, and bracing.

Tip: Default stake spacing is 4 ft, and bracing is calculated at 1 brace per 8 linear ft of perimeter.

20×10 slab at 1 ft height ≈ 60 ft perimeter, 60 ft boards, 15 stakes, 8 braces.

Stake spacing?
Typically 3–5 ft.

Bracing needed?
About 1 per 8–10 ft.

Reuse boards?
Yes, if cleaned and stored.