Concrete Footing Material Estimator
Estimate a simple continuous footing before checking drawings, local requirements, and supplier minimums. Convert footing length, width, depth, waste, optional rebar runs, ties, and form boards into a rough material takeoff.
Enter project values
Use the example values or enter your own project measurements.
Planning estimate only. Results update locally in your browser.
Plan the order
Compare waste, depth, thickness, and package assumptions before buying material.
Educational/planning estimate only. Confirm product labels, supplier rules, code requirements, site conditions, and contractor guidance where relevant.
What this means
A 40 ft footing at 18 in wide by 12 in deep needs about 60 ft³ before waste, or 66 ft³ after a 10% buffer. That is roughly 2.44 yd³ of concrete, or 110 80 lb bags if using bagged mix. The optional reinforcement rough-in is 88 linear ft across 2 runs, about 6 stock sticks. Each longitudinal run needs about 2 splices at 24 inches for this stock length.
Material memo
Copy or print a local-only order note for your supplier, shopping list, or project plan.
| Footing depth | Concrete yd³ | 80 lb bags | Rebar sticks | Form boards |
|---|---|---|---|---|
| 10 in | 2.04 | 92 | 6 | 5 |
| 12 in | 2.44 | 110 | 6 | 5 |
| 14 in | 2.85 | 129 | 6 | 5 |
- Concrete yd³
- 2.04
- 80 lb bags
- 92
- Rebar sticks
- 6
- Form boards
- 5
- Concrete yd³
- 2.44
- 80 lb bags
- 110
- Rebar sticks
- 6
- Form boards
- 5
- Concrete yd³
- 2.85
- 80 lb bags
- 129
- Rebar sticks
- 6
- Form boards
- 5
Ready-mix vs bagged cue
2.44 yd³ is the adjusted concrete volume before supplier rounding. Bagged mix is usually practical for small pours or poor truck access; ready-mix may be safer for larger continuous footings where cold joints, mixing pace, and labor become risks.
Rebar and cover reminder
This rough-in assumes 2 longitudinal runs and 88 linear ft including lap allowance. Confirm bar size, concrete cover, chairs, lap length, dowels, hooks, and inspection timing from the drawings or local requirements.
Form and trench reality check
Two-sided formwork is about 80 linear ft before stakes, bracing, kickers, corners, stepped sections, and grade changes. If pouring directly in a trench, over-excavation and sloughing soil can matter more than board count.
Watch-outs
- Footing volume changes with trench slough, uneven excavation, keyways, steps, pads, piers, haunches, and grade variation.
- Rebar, ties, dowels, anchors, chairs, vapor barrier, drainage, and formwork may need separate detail beyond this rough takeoff.
- This is a planning estimate only, not structural design or code guidance.
Notes
Planning estimate only. Confirm footing size, soil bearing, frost depth, reinforcement, cover, anchors, drainage, local code, permits, and engineered drawings before buying or pouring.
Get a better answer from the Concrete Footing Material Estimator
- Start with the example values to see how the tool behaves.
- Swap in your own numbers, even if they are rough first-pass estimates.
- Change one input at a time so you can see what actually moves the result.
What the result means
The result is a planning estimate for how much material you may need. It helps you avoid underbuying, overbuying, or missing the parts around the main material.
How to use it
Run the project once with your best measurements, then run it again with extra waste or tougher site conditions. The difference is your ordering cushion.
What can change it
Supplier labels, product coverage, local code, jobsite surprises, delivery minimums, and installer judgment can beat the calculator. Use the result as a buying conversation starter.
Good for
Estimate concrete volume for simple continuous footings.
Check next
Compare your result with Concrete Calculator, Rebar Material Estimator, Concrete Block / CMU Material Estimator when you want more context.
Best habit
Run a conservative case and an optimistic case. The gap between them is often more useful than a single answer.
Common uses
- Estimate concrete volume for simple continuous footings.
- Plan bagged mix, rebar sticks, tie or stirrup count, and form boards.
- Compare footing depth assumptions before ordering concrete.
Common questions
Is the Concrete Footing Material Estimator private?
Yes. CalcShelf calculators run without an account, do not save calculator entries, and do not put raw inputs into shareable URLs or analytics events.
How accurate is the Concrete Footing Material Estimator?
It is a material planning estimate. Product coverage, local code, site conditions, waste, delivery minimums, and installer judgment can change the final buy list.
What should I check after using the Concrete Footing Material Estimator?
Verify measurements, product labels, local code, substrate or site conditions, waste, accessories, delivery rules, and supplier guidance.
Which calculator should I try next?
Use the related calculators below to cross-check the same decision from another angle before you act.
Method behind the estimate
Construction estimators use common area, volume, coverage, package-rounding, and waste-cushion math based on user-entered project dimensions.
Why the detail matters
Supplier labels, code, site conditions, product specs, access, and contractor judgment can override the estimate. Treat the detail tables as buying context, not a final takeoff.
Privacy guardrail
Your calculator values are for you. CalcShelf does not require an account, save calculator entries, put your numbers into shareable URLs, or use raw inputs as analytics events.
Copy or print safely
Use any copy, print, or worksheet controls as local handoff tools for your own notes, supplier calls, lender questions, or implementation checklist. They are there to help you explain the result to a human.
Before acting
Treat the result as a decision draft, not a verdict. Recheck the source numbers, run a downside case, and verify the real-world rule, quote, label, or spec that controls the final answer.
Last reviewed: May 11, 2026. See methodology and editorial policy for formulas, assumptions, rounding, review approach, and limitations. Before buying or building, check product labels, local code, site conditions, and supplier or contractor guidance.