Engineering & Construction

Formwork Area Calculator

Estimate formwork for a slab soffit, a beam, a column or a wall. Openings are not deducted.

MemberLength or height (m)Height for a column. Length for a slab, beam or wall.Width (m)Slab width, beam width, column width, or wall height.Depth (m)Beam depth or the other column side. A slab soffit and a wall ignore this.Number

How this number is worked out

Slab is the soffit. Beam is two sides plus the soffit. Column is four faces. Wall is two faces. Openings are not deducted. This is a planning estimate. Confirm quantities against the structural drawings before ordering or cutting material.

Result

Enter the sizes, then press Calculate. The answer stays in this panel.

Result

Enter the sizes, then press Calculate. The answer stays in this panel.

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How to use the Formwork Area Calculator

1Choose the member.
2Enter the sizes. Depth is used for a beam and a column.
3Read the contact area.

Questions

Which faces are counted?

A slab is the soffit. A beam is two sides and the soffit. A column is four faces. A wall is both faces.

Can I deduct a door?

Not on this page. Subtract the opening area from the result.

Result

Result

How to use the Formwork Area Calculator

Questions

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Result

Result