Sizing Calculator

Find The FootingPad Product That Best Fits Your Project

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. To see more information on the details of how this calculator works or if you want to manually calculate your footing size by post, use the guides at the bottom of the page. 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

    Deck and Post-Frame Load Calculation Guides

    Use these guides if you’d like to manually calculate your footing size by post. These guides also offer information on formulas associated with deck and post-frame building construction, including snow load weight.

    Decks - Calculation Guide

    Post-Frame Buildings - Calculation Guide

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