Concrete Formwork Calculator
Estimate side-form contact area, full form sheets, perimeter bracing stock, purchased coverage and material cost for identical rectangular concrete elements.
Default project preview
7 sheets
Form contact area
192 ft²
Order coverage
211.2 ft²
Purchased coverage
224 ft²
Form perimeter
96 ft
Calculator
Build the material order
Your order will appear here
Enter the project details and calculate a rounded material estimate.
Methodology
Transparent calculation
BuildMeter converts every input to a consistent internal unit, applies the selected allowance, and rounds products up to whole purchasable units.
Contact area = 2 × (length + width) × form height × quantity. The allowance is applied before form sheets are rounded up. Bracing stock uses total perimeter divided by stock length.
FAQ
Concrete Formwork Calculator questions
Does this include the form bottom?+
No. The calculator assumes four vertical formed sides. Add soffit or base forms separately when required.
Can form sheets be reused?+
Often yes, depending on material, finish requirements and stripping damage. Adjust the allowance to reflect the planned reuse.
Does sheet count determine safe form spacing?+
No. Studs, ties and braces must be designed for fresh-concrete pressure and site conditions.