How to use the concrete wall calculator
This calculator helps you calculate concrete volume and two-face formwork area for a solid wall. It is intended for quantity takeoffs, early budgets and checks against a measured schedule. Start with the dimensions or quantities for one clearly defined item of work. Enter values in the units shown beside each field; millimetres and metres are not interchangeable.
This is a solid rectangular wall without openings. Formwork excludes end stops and the top. Deduct openings separately using a consistent measurement basis.
Worked example
A 6 m long, 2.4 m high wall at 0.2 m thick contains 2.88 m³. Both faces total 28.8 m².
Before you order
Compare the result with your drawings and supplier information. Keep the original net quantity separate from allowances, and round purchasing quantities only at the ordering stage. Check whether delivery, labour and related materials belong elsewhere in your estimate. If the drawing or specification changes, update the inputs and record the revised basis instead of reusing an earlier total.
For the concepts behind this calculation, read Formwork, Takeoff (Quantity Takeoff), Concrete Grade.