Online concrete calculator (UK)

Our free online concrete calculator will help you accurately determine the required amount of materials for making concrete of different grades. You can calculate the proportions of cement, sand, gravel and water to obtain a quality concrete mixture.

How to Use the Concrete Calculator?

1. Enter the required concrete volume in cubic metres

2. Select the desired concrete grade (from C8/10 to C55/67)

3. Click the "Calculate" button to get precise proportions

Concrete Grades and Their Applications

C8/10 - C16/20: for non-structural elements and blinding concrete

C20/25 - C25/30: for residential foundations and floor screeds

C30/37 - C35/45: for structural concrete and industrial floors

C40/50 - C55/67: for high-strength structures and bridges

Concrete Mixing Tips

• Use clean water free from impurities

• Follow exact material proportions

• Check material quality before use

• Consider weather conditions when pouring concrete