Disclaimer: FootingPad® by AG-CO provides this tool to assist you in selecting the best size footing to handle the weight of the structure you are building. It uses the data you provide into known equations to determine the surface area of the footing.

If you are unsure about the data you enter or are need assistance in deck design, you should consult an engineer or other design professional. Click Here for Deck or Click Here for Pole Barn / Post Frame to see more information on the details of how this calculator works or if you want to manually calculate your footing size by post. AG-CO is not responsible for inaccurate data entry resulting in product failure due to overloading.

Click here to determine the size of footing you need for your deck posts. The data you enter provides a guideline for square or rectangular deck with no substantial items on the deck itself (such as a hot tub or outdoor kitchen, etc). Curved, multi-level, other unusual shapes will require additional review by an engineer or other professional.

Click here to use FootingPad by AG-CO’s easy to use calculator to determine what size diameter FootingPad you need for your post frame building

You must fix the following errors for the calculator to work:

    Dimensional Data

    ft
    ft
    ft
    ft

    Load Data

    lb/sq ft
    lb/sq ft
    lb/sq ft
    lb/sq ft

    Dimensional Data

    ft
    ft

    Load Data

    lb/sq ft
    lb/sq ft
    lb/sq ft
    ft