Annular Space Concrete Volume Calculator

This tool calculates the volume of concrete needed to fill the annular space between two concentric cylinders, such as in well casings or pipe installations.

Unit System: Imperial (inches/feet) Metric (cm/meters) Outer Diameter (inches): Inner Diameter (inches): Depth/Height (feet): Waste Factor (%): Bag Size for Estimate: None 60 lb bag (yields ~0.45 cu ft) 80 lb bag (yields ~0.6 cu ft) 25 kg bag (yields ~0.015 cu m) Output Unit: Cubic Feet Cubic Yards Cubic Meters Gallons (U.S.) Calculate Reset

Note: This is a basic calculator. For precise estimates, consult a professional. Assumes perfect cylindrical shapes. Bag yields are approximate.