Concrete Formwork Calculator
Concrete Formwork Calculator
Estimate concrete form boards, stakes, bracing, screws, form oil, labor, material cost, and total formwork cost for slabs, driveways, patios, pads, sidewalks, and footings.
Calculates
Linear feet
Includes
Stakes & bracing
Output
Total cost
Common formwork items
Use this as a planning estimate. Final formwork needs depend on concrete depth, soil conditions, layout, reinforcement, and finish requirements.
Calculate concrete formwork materials
Enter form dimensions, board pricing, stake spacing, bracing, fasteners, form release, and labor to estimate total formwork cost.
Formula used
Form linear feet = perimeter × form runs + extra form length. Board count is rounded up after adding the selected waste allowance.
Formwork results
Estimated total formwork cost
$536.79
$6.10 per linear foot of forms
Planning notes
- Stake spacing is within a common planning range for many flatwork forms.
- Labor is the largest cost driver in this estimate.
Use this as a planning estimate. Actual formwork requirements can change with form height, soil, curves, slopes, concrete pressure, and inspection requirements.
Estimate form boards
Calculate board count from perimeter length, board length, number of form runs, and waste allowance.
Plan stakes and bracing
Estimate stakes, braces, and fasteners based on spacing rules and jobsite complexity.
Calculate formwork cost
Estimate material cost, labor cost, form release cost, and total concrete formwork cost.
How concrete formwork is estimated
Concrete formwork starts with the total perimeter or linear feet of the pour. A simple rectangular slab uses the outside perimeter, while footings, steps, thickened edges, or multiple pours may require additional form runs.
Form boards hold the wet concrete in place until it sets. Stakes, bracing, screws, and layout labor help keep the forms straight, level, and strong enough to resist concrete pressure during placement.
Formwork cost can become significant on small jobs because setup labor, layout time, and material handling do not always scale directly with concrete volume.
Formwork planning table
Concrete formwork calculator FAQs
What size boards are used for concrete forms?
Common flatwork forms use 2x4, 2x6, or 2x8 boards depending on slab thickness, edge depth, and required form height.
How far apart should concrete form stakes be?
Many jobs use stakes every 2 to 4 feet, with closer spacing at corners, curves, soft soil, or deeper forms.
Do concrete forms need bracing?
Bracing helps keep forms straight and prevents movement during the pour. Deeper forms, long runs, and soft ground usually need more bracing.
Should I include labor in formwork cost?
Yes. Layout, staking, leveling, bracing, stripping, and cleanup can represent a large share of total formwork cost.