How Much Concrete for a 14-Inch Round Footing 24 Inches Deep?
Estimate for a 14-inch diameter x 24-inch deep round footing: 2.138 cu ft, 0.0792 yd³, and bag counts.
Concrete needed for a 14-inch round footing 24 inches deep: exact volume, cubic yards, and bag counts plus a 10% waste planning total for ordering.
14-inch diameter x 24-inch deep is a small round pour set up in a tube form. This page gives the exact volume and the bagged concrete counts for that narrow, cylindrical footing.
It often suits isolated post supports and narrow layouts. Plan on 24 inches of excavation, check for frost depth and permit needs, and keep the volume and bag numbers handy for ordering.
Quick Answer
Exact volume: 2.138 cubic feet (0.0792 cubic yards).
With 10% waste for ordering: 2.3518 cubic feet (0.0871 cubic yards). Exact bag counts: 8 40-lb bags, 5 60-lb bags, 4 80-lb bags. Planning bag counts with waste: 8 40-lb bags, 6 60-lb bags, 4 80-lb bags.
Need a custom estimate? Use the Footing Calculator. Browse footing size pages. All project pages.
How to Use This Footing Estimate
Quick steps to check and order concrete for a 14-inch round footing 24 inches deep.
- Confirm diameter and depth at the site (14-inch diameter x 24-inch deep).
- Use the provided volume (2.138 cu ft) to compare mixes.
- Add the 10% waste allowance for ordering (2.3518 cu ft).
- Decide bagged concrete or ready-mix based on how many footings you have.
- Scale quantities for multiple footings before you buy.
- Round bag counts up to whole bags and note which bag size you’ll use.
Formula
Use this round footing formula:
Volume (ft³) = π × Radius (ft) × Radius (ft) × Depth (ft)
3.1416 × 0.58 × 0.58 × 2 = 2.14 ft³
2.14 ÷ 27 = 0.08 yd³
If you add a 10% waste allowance, you should plan closer to 0.09 cubic yards.
Worked Example
Single footing: before waste the footing is 2.138 cubic feet (0.0792 yd³). With 10% waste it is 2.3518 cubic feet (0.0871 yd³). Exact bag counts: 8 40-lb, 5 60-lb, 4 80-lb. Planning bag counts: 8 40-lb, 6 60-lb, 4 80-lb.
Multiple footings example (3 footings): total before waste = 6.414 cu ft (0.2376 yd³). With 10% waste = 7.0554 cu ft (0.2613 yd³). Total exact bags = 24 40-lb, 15 60-lb, 12 80-lb. Total planning bags = 24 40-lb, 18 60-lb, 12 80-lb.
Bag Count Estimate
- 4 bags of 80 lb concrete mix
- 6 bags of 60 lb concrete mix
- 8 bags of 40 lb concrete mix
Always verify the actual yield on the product label before buying materials.
When Bagged Concrete vs Ready-Mix Makes Sense
At about 2.35 cu ft per footing with waste, bagged concrete is often simpler for a single 14-inch tube pour. You can mix a few 40-lb or 60-lb bags on site and avoid a truck for one or two footings.
When you have several footings (three or more of this size) the logistics change. A small ready-mix delivery becomes more reasonable once total volume and mixing time push past what is practical with bags.
Common Uses for This Footing Size
This 14-inch diameter x 24-inch deep footing fits narrow, isolated supports: single post piers for small decks, pergola posts, sign posts, and similar cylindrical footing layouts. The tube form keeps the footprint small and concentrated directly under the support.
Limits depend on load, soil bearing capacity, frost depth, and whether reinforcement is needed. For heavier columns or deeper frost zones the diameter or reinforcement may need to increase; confirm load and site conditions before final sizing.
Common Mistakes to Avoid
Common estimating and ordering mistakes to avoid for this footing size:
- Underordering by using exact volume but skipping the 10% waste allowance.
- Mixing up exact bag counts with planning counts and ordering the wrong number of 60-lb bags.
- Forgetting to include extra for small settlement or uneven excavation depths.
- Not scaling quantities correctly when multiplying for multiple footings.
- Ordering ready-mix without checking minimum delivery volumes for small pours.
- Assuming one bag size mixes to the same yield as another without checking manufacturer yields.
Frequently Asked Questions
What is the exact concrete volume for a 14-inch round footing 24 inches deep?
The exact volume is 2.138 cubic feet, which is 0.0792 cubic yards.
How many bags of concrete do I need for this single footing?
Exact bag counts are 8 40-lb bags, 5 60-lb bags, or 4 80-lb bags. For ordering with 10% waste, plan on 8 40-lb, 6 60-lb, or 4 80-lb bags.
Why should I add a 10% waste allowance?
The 10% covers spillage, uneven excavation, and minor overfill so you don’t run short during the pour.
Is this footing size adequate for a deck or pergola post?
This size is sometimes used for smaller deck or pergola posts and isolated supports, but adequacy depends on the actual load, soil bearing, frost depth, and reinforcement; check those conditions before relying on this size.
Keep Planning Your Concrete Project
Use the calculator, compare more footing pages, and review your estimate before buying materials.
Disclaimer: This page provides planning estimates only. Actual concrete needs vary with excavation accuracy, site conditions, local code requirements, bag yield, and supplier guidance. Always verify measurements before buying materials, and consult a qualified professional for structural or code-sensitive work.