CONCRETE FOOTING CALCULATOR
Pour the
right amount.
Not a guess.
Concrete Footing Calculator turns your measurements into cubic yards, cubic feet, and bag counts — for footings, slabs, columns, post holes, and foundation walls. Work it out before the truck shows up.
Five calculators, one belt
Footing
Strip and spread footings. Enter length, width, and depth to get concrete volume in cubic feet and cubic yards, plus a bag count for pre-mix.
Slab
Slabs on grade — patios, driveways, sheds. Set the area and thickness and get volume, bags, and a waste allowance built in.
Column
Round or square piers and columns. Diameter or side length in, cubic yardage and bag count out.
Post hole
Fence and deck posts. Accounts for the post itself, so you're not ordering concrete for volume the post already fills.
Foundation wall
Stem walls and linear foundations. Length, height, and thickness turn into total pour volume for the run.
Built for the jobsite, not a spreadsheet
Saved projects
Keep every job's measurements on file. Come back mid-pour without re-entering a single number.
Calculation history
Every run you've calculated stays logged, so you can check a figure against last week's job.
Export and share
Turn a calculation into a PDF and hand it to a supplier, a crew member, or a client on the spot.
Ask the AI helper
Stuck on a mix ratio or a term you don't recognize? Ask in plain language and get a straight answer.
How the numbers get figured
Volume comes first: length times width times depth, converted to cubic yards. From there, bag counts are worked out against standard 40, 60, and 80 lb mix yields, with a waste margin added so you're not one bag short on pour day.
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