The toolbox / Formwork
Formwork calculators & tools
Calculate concrete-contact area for walls, columns, beams, slabs, and footings. Continue into plywood quantities, form-panel planning, and cutting-waste checks before ordering materials.
Explore the tools
Calculate contact area, then plan plywood quantity and cutsConcrete Formwork Calculator
Calculate concrete-contact formwork area for walls, columns, beams, slabs, and footings in Metric or Imperial units.
Formwork Plywood Sheet Calculator
Calculate how many plywood sheets to order from formwork contact area, sheet size, deductions, and a chosen allowance.
Formwork Plywood Utilization and Waste Calculator
Audit an allocated plywood sheet count against net form panel area, with theoretical utilization, surplus, or shortfall.
Formwork Plywood Cutting Calculator
Turn a rectangular form-panel cut list into kerf-aware plywood sheet layouts with grain locks, offcuts, and utilization.
Formwork guides
Compare the system, then choose the panelSystem guide
Types of Concrete Formwork
Compare job-built, modular, gang, table, jump, slip, and permanent forms, then follow the estimating workflow that fits the selected system.
Material guide
Plywood for Concrete Forms
Check the panel designation, face, thickness, usable dimensions, and design information before estimating sheets or planning cuts.
Choose the workflow
Which formwork calculator or guide should you use?
Start at the first decision you have not completed. Each page handles one stage so contact area, ordering allowance, allocation surplus, and cutting waste do not get mixed together.
- Choose the form system. Compare the types of concrete formwork when the construction approach and formed surfaces are not yet clear.
- Calculate concrete-contact area. Use the Concrete Formwork Calculator for walls, columns, beams, slabs, and footings.
- Confirm the panel. Review plywood for concrete forms before relying on sheet dimensions or planning cuts.
- Estimate whole sheets. Use the Formwork Plywood Sheet Calculator when you know the contact area and need an allowance-based order quantity.
- Check the allocation or cutting plan. Audit a proposed sheet count with the Plywood Utilization and Waste Calculator, or test panel fit, kerf, and orientation with the Plywood Cutting Calculator.
Scope
Quantity planning is not structural formwork design
These tools estimate concrete-contact area and plywood quantities from information you provide. They do not select a formwork system or design sheathing, studs, walers, ties, shores, bracing, pour rates, or stripping schedules. Use the project drawings, specifications, manufacturer data, and the responsible formwork designer for those decisions.