Aggregates Calculator


Our Aggregates Calculator will help you determine the quantity of aggregates you need for your project.  Please enter the Width, Length and Thickness of  the area, then click on the Calculate button.


m mm
m mm
m mm
Result Tonnes required


Result (Metres) m mm

Please note that calculated tonnage is approximate and we recommend that all measurements and calculations are checked by the contractor on site before placing an order.


If you would like to talk to someone about your aggregate requirements please call our sales office:


Eastern Area (Suffolk, Essex and Norfolk), Tel: 01473 811900



London & Home Counties, Tel: 01784 263940



Southern Area, Tel: 01795 594003




Please click here to find out more information about our site locations.

Quick links

  • Contact Us & Site Finder

    Contact Us & Site Finder

    Southern Area - 01795 594000
    Eastern Area - 01473 811900
    London & Home Counties - 01784 263940

  • Products & Services

    Products & Services

    Find out more about Brett Aggregates full range of products and services

  • Aggregates Safety Data Sheets

    Aggregates Safety Data Sheets

    Our Safety data sheets provide information regarding the properties of the particular substances used within our materials.
    Read more