Cylinder Cubic Yardage Calculator
Find the volume of a cylinder in cubic yards (a pier, post hole or round slab), with a price estimate.
Change the values and press Calculate to work out your own figures.
Enter the diameter and height.
Show the working
- volume = π × (diameter ÷ 2)² × height
How to use it
Enter the diameter and height.
Lengths can be decimals, fractions or tape entries such as 12' 6 1/2" (in feet or inches). Prices are optional.
Key facts
cubic yards = π × (diameter ÷ 2)² × height ÷ 27 (in feet)
Units
A cubic yard is 27 cubic feet, a cubic foot 1,728 cubic inches, and a cubic meter about 35.31 cubic feet. Lengths can be typed as tape readings such as 12' 6".
Questions
How many cubic yards in a 12 in pier 4 ft deep?
0.1164 cubic yards.
Formulas
cubic yards = π × (diameter ÷ 2)² × height ÷ 27 (in feet)
Sources
Limitations
- Material densities are typical values (the midpoint of the commonly published range); real loads vary with moisture, grading and compaction, so check with your supplier or type in their density.
- Tank results are the geometric volume; real tanks have wall thickness and fittings.