How to use it
- Enter the tube's diameter in inches.
- Enter the depth in feet.
- Specify how many tubes you need.
- Read the cubic yards, cubic feet, and bag count results.
What it does: The Sono Tube Concrete Calculator instantly turns the tube’s diameter and depth into a concrete volume in cubic feet, then into cubic yards and the number of standard 80‑lb bags. Why it matters: Knowing exact volume prevents over‑ordering, saves money, and avoids project delays. How to read: The Cubic Feet value is the raw volume, Cubic Yards is that volume divided by 27 (the feet in a yard), and 80‑lb Bags is the cubic feet divided by 0.6 (the yield per bag). Use the results to place precise orders, add a small waste factor, and keep your budget on track. If you entered a quantity greater than 1, the calculator multiplies each result accordingly, so you see the total material needed for the whole job. The clear layout lets you copy the numbers directly into a purchase order or share them with your crew.
Pro tips
- Add a 5‑10% waste allowance to the bag count.
- Round up the bag total; you can’t buy a fraction of a bag.
- Order a full extra bag if the site has limited storage space.
- Double‑check the diameter unit; the calculator expects inches, not centimeters.
Real-life examples
- A homeowner estimating concrete for a new decorative pond border.
- A landscape contractor pricing the fill for multiple Sono Tube footings.
- A DIY renovator planning a garden path with pre‑cast concrete tubes.
Case study
John needed concrete for a 12‑tube fence base. He entered 6 in diameter, 4 ft depth, and 12 tubes. The calculator showed 5.3 cubic yards, 236 80‑lb bags. By ordering exactly that amount, he avoided a $300 over‑order and finished on schedule.