Cubic Feet Calculator
Need to know how much space a box takes up, how much water a tank holds, or how many cubic yards of gravel to order? This calculator figures out the volume in cubic feet for rectangular and cylindrical shapes, then converts to cubic yards, cubic meters, and US gallons so you can order materials or plan storage with confidence.
The formulas:
- Rectangular / Box: Volume = Length x Width x Height
- Cylinder: Volume = pi x Radius2 x Height
Once you have cubic feet, converting to other units is simple multiplication:
- Cubic yards: divide by 27 (there are 27 cubic feet in a cubic yard)
- Cubic meters: multiply by 0.0283168
- US gallons: multiply by 7.48052
Common uses for cubic feet calculations:
- Shipping: Freight carriers charge by dimensional weight, which depends on the box's cubic footage
- Storage: Moving companies estimate truck space in cubic feet. A typical 26-foot moving truck holds about 1,700 cubic feet.
- Landscaping: Mulch, soil, and gravel are often sold by the cubic yard. Calculate cubic feet first, then divide by 27.
- Aquariums and tanks: Convert cubic feet to gallons to know exact water capacity
If you are measuring in inches rather than feet, switch the unit dropdown to inches and the calculator handles the conversion automatically.