Measure the pour area
Use finished dimensions for length and width. For irregular areas, split the project into smaller rectangles.
concrete
Post Hole Concrete Calculator
Calculate concrete bags for fence post holes, deck posts, and footings. Results update instantly as you change the inputs.
Post Hole Concrete Calculator0.13 yd³ with 10% waste
- Cubic feet
- 3.14 ft³
- Cubic meters
- 0.09 m³
- 80 lb bags
- 6
- 60 lb bags
- 7
- 40 lb bags
- 11
How to use it
Enter slab thickness
Most patios and walkways use 4 inches. Driveways and load-bearing work may need more.
Order with waste
Use the 10% waste recommendation to cover spillage, uneven subgrade, and small measurement errors.
Related calculators
Concrete Column Calculator Calculate concrete volume for round columns and piers. Concrete Footing Calculator Estimate concrete yards and bags for continuous strip footings. Gravel Calculator Calculate gravel cubic yards and approximate tons from area and depth. Concrete Bag Calculator Convert slab dimensions into 40 lb, 60 lb, and 80 lb concrete bag counts. Concrete Cubic Feet Calculator Calculate concrete cubic feet, cubic yards, and cubic meters. Concrete Slab Calculator Calculate concrete yards and bags for garage slabs, shed bases, pads, and flatwork. Sidewalk Concrete Calculator Calculate concrete for sidewalks, walkways, and narrow slab pours. Concrete Stairs Calculator Estimate concrete for solid stair pours using width, tread depth, riser height, and step count.
FAQ
Concrete estimating questions
How does the post hole concrete calculator work?
Enter the project dimensions and the calculator converts them into material quantities using common construction estimating formulas.
Should I add waste?
Yes. Most material orders should include a waste allowance for cuts, spillage, uneven base, and field measurement variation.
Are these results final construction advice?
No. Use these estimates for planning, then verify product yield, local code, structural requirements, and supplier recommendations.