Cubic Feet Calculator
Find the volume of a space or material in cubic feet from its length, width and height, or from an area and depth, with a price estimate.
Change the values and press Calculate to work out your own figures.
Length, width and height
Enter the three dimensions.
Show the working
- volume = length × width × height
Area and depth
Enter the area and its depth.
Show the working
- volume = area × depth
How to use it
Enter the three dimensions. Enter the area and its depth.
Lengths can be decimals, fractions or tape entries such as 12' 6 1/2" (in feet or inches). Prices are optional.
Key facts
cubic feet = length × width × height (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 feet in a 20 × 10 × 8 ft room?
1,600 cubic feet.
How many cubic inches in a cubic foot?
1,728.
Formulas
cubic feet = length × width × height (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.