Volume Calculator
Calculate volume of rectangular prisms, cylinders, and spheres for concrete, fill, and tank capacity.
Volume Calculator
Dimensions
Box, cylinder, or sphere
Calculated Volume
Smart Insights
Personalized takeaways from your numbers.
Real-Life Examples
10×10×0.5 ft
The Formula Behind It
Box: l×w×h | Cylinder: πr²h | Sphere: ⁴⁄₃πr³How It Works
- Select shape — box/slab, cylinder, or sphere.
- Enter dimensions in feet or meters.
- View volume in cubic feet, cubic yards, and cubic meters.
- Use the waste factor tip for material orders.
About Volume Calculator
The Volume Calculator computes cubic capacity for construction, landscaping, and engineering. Calculate concrete for slabs, fill for trenches, or tank capacity for cylindrical and spherical vessels.
Common Construction Uses
Concrete slabs: length × width × thickness. Columns: πr²h. Excavation: same as box volume. Convert cubic feet to cubic yards by dividing by 27 for US concrete orders.
Frequently Asked Questions
How do I calculate concrete volume?
For a slab, multiply length × width × thickness. For a column, use cylinder volume πr²h.
How many cubic yards of concrete do I need?
Divide cubic feet by 27 to get cubic yards. Add 5–10% waste for spills and uneven subgrade.
What units are supported?
Enter dimensions in feet or meters — results show cubic feet and cubic meters.
How is cylinder volume calculated?
Volume = π × radius² × height. Enter radius (not diameter) unless noted.
Can I calculate sphere volume?
Yes. Select sphere and enter radius. Useful for tanks and domes.
How accurate are estimates?
Always verify on-site. This tool provides mathematical volume from your measurements.