CFT Calculator
Enter the length, width, and height in inches to find the volume in cubic feet.
Dimensions should be entered in inches for a result in cubic feet (CFT).
How CFT is calculated from inches
Cubic feet (CFT) is found by multiplying length, width, and height together, then dividing by 1,728 — the number of cubic inches in a cubic foot (12 × 12 × 12). This gives the volume in the more commonly used cubic foot unit when your measurements are in inches.
This calculation is commonly used for crates, boxes, storage space, soil or mulch volume, and any situation where dimensions are measured in inches but volume needs to be expressed in cubic feet for pricing, shipping, or material estimates.
Frequently asked questions
Why divide by 1,728 instead of some other number?
1,728 is 12³ — the number of cubic inches that fit inside one cubic foot, since each foot equals 12 inches in each of the three dimensions (12 × 12 × 12 = 1,728).
What if my measurements are in feet already?
If your dimensions are already in feet, simply multiply length × width × height directly — there's no need for this inches-to-cubic-feet conversion, since the result is already in cubic feet.
What's CFT commonly used for?
CFT is widely used in shipping and freight for measuring cargo volume, in landscaping and gardening for soil or mulch quantities, and in storage and moving industries for estimating space requirements.