How to use it
- Enter hole diameter in inches.
- Enter depth in feet.
- Enter how many holes you need.
- Read cubic yards, bags and cubic feet results.
What it does – The calculator turns your hole dimensions and quantity into three actionable numbers: total cubic yards of concrete, how many 80‑lb bags to order, and the total cubic feet. Knowing cubic yards helps you compare to ready‑mix deliveries, while bag count matches what you’ll buy at the store. The cubic‑feet figure is useful for estimating waste and for checking that the volume fits within a standard 0.6 cf per bag. Simply input diameter, depth and how many holes, and the tool instantly returns the three results, so you can budget, order, and start digging without guesswork. The results are presented in both metric‑friendly cubic yards and the more familiar bag count, letting contractors and DIYers alike plan accurately. No manual conversions or spreadsheets required—just pure numbers you can trust.
Pro tips
- Add 10% extra for spillage and uneven ground.
- Round up bag count; you can’t buy a fraction of a bag.
- Order bags in multiples of 5 to reduce shipping costs.
- Double‑check diameter and depth; a small change dramatically changes volume.
Real-life examples
- A homeowner installing a 4‑in fence post every 8 ft along a 200‑ft line.
- A landscaper setting 6‑in tree stakes for a new orchard.
- A contractor pouring concrete footings for a deck with 12 in holes.
Case study
Mike needed 12 holes for a new patio fence. Using the calculator, he entered 4 in diameter, 3 ft depth and 12 holes, getting 0.9 cubic yards, 15 bags. He ordered exactly 15 bags, avoided a $30 over‑order, and completed the fence on schedule.