The Volume of Concrete in a Footer calculator computes the volume of concrete in a complete rectangular footer (e.g. the footer under a rectangular house/building) based on the length and width of overall foot print and the depth and width of the footer channel (see diagram).
INSTRUCTIONS: Choose units and enter the following:
Volume of Concrete (V): The volume of concrete (V) needed for the footer is returned in cubic yards. However, this can be automatically converted into other volume units (e.g. cubic meters) via the pull-down menu. The calculator also returns the equivalent volume in bags of concrete:
Note: It is important to remember that the length and width of the footer are more than the length and width of the foundation.