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Enter your footing dimensions and total length — get cubic yards, bags, and cost instantly. Contractor-grade math with the formula shown, not a black box.
Measuring run by run? Use the linear feet of footing calculator to add wall segments first.
Includes your waste allowance. Ready-mix pricing varies by region and load size — confirm with your local plant. Bag counts are rounded up.
FootingTakeoff reads a footing plan and returns total linear feet, pad count, and an invoice at your rates — automatically.
Footing volume is a rectangular prism: width × depth × length. The only trick is unit discipline — width and depth are measured in inches on plans, length in feet:
Example: a 20″ × 6″ footing running 300 LF is (1.667 × 0.5 × 300) = 250 ft³ = 9.26 yd³, call it 10.2 yd³ with 10% waste. That's a ready-mix order, not a bag job — 250 ft³ would take more than 400 eighty-pound bags.
Most house wall footings run 16–24 inches wide and 6–12 inches thick depending on soil and load. See the full footing size chart for common configurations and code minimums, and always pour to your approved plans.
All tools
Add wall segments run by run, get total LF and an invoice-style total at your $/LF rate.
$Concrete, per-linear-foot rates, and pads — a full footing cost estimate.
▢Interior support pads: volume, bags, and flat-rate billing per pad.
◎Sonotube and pier footings: concrete per tube and per project.
⊞Common residential footing dimensions and code minimums, referenced.
→The 5-minute method for measuring footing runs off a plan.
Guides & references
Frost line and the IRC depth rule, with real frost depths by region.
↔The IRC width table by soil bearing and stories, plus the projection rule.
$2026 installed cost by footing size, ready-mix and rebar prices, sourced.
▤45, 60, 72, or 90 bags per yard, plus bags for common footing volumes.
◎Concrete per form tube by diameter and depth, in cubic feet and bags.
⋮⋮Why beam span sets the count, and footing sizes by soil (DCA6/IRC).
≠The difference, defined — and why the footing is only part of the foundation.
A–ZThirty-two footing and foundation terms, each defined in one paragraph.
FAQ