How to use the concrete cost calculator
This calculator helps you estimate concrete material costs from your quantity, wastage allowance and supplier price. 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.
Enter a current supplier quote in your own currency. Bulk pricing uses volume; bag pricing rounds up to whole bags first. Delivery, minimum loads, pumping, labour and taxes are excluded.
Worked example
3.6 m³ with 5% wastage is 3.78 m³. At 150 per m³, the material allowance is 567.
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 Unit Rate, Wastage Factor, Rate Build-Up.