Hole Volume Calculator
Construction & Home ImprovementCalculate the volume of a circular or rectangular hole and the concrete bags needed to fill it.
Total Volume
Total volume of all holes combined.
80 lb Concrete Bags Needed
2
Number of standard 80 lb concrete bags needed, each yielding about 0.6 cubic feet.
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Creators
Odeh Ahwal0people find this calculator helpful
Views
Helpful
Saved
Embeds
Construction & Home Improvement calculators
Frequently Asked Questions
How is hole volume calculated?
A circular hole uses the cylinder formula, pi times radius squared times depth. A rectangular hole uses length times width times depth. Both are straightforward volume-of-a-prism calculations.
What is the 0.6 cubic feet figure based on?
A standard 80 pound bag of pre-mixed concrete yields about 0.6 cubic feet once mixed, a figure published on major concrete mix manufacturer technical data sheets, the same figure already used elsewhere on this site for concrete bag calculations.
Does this account for the post taking up space in the hole?
No, this calculates the raw hole volume only. If filling around a post, use the Post Hole Concrete Calculator instead, which subtracts the post's own volume from the hole volume.
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