Measure the length, width, and height of the object in inches
Multiply length × width × height
Use the formula: cubic inches = L × W × H
For irregular shapes, divide the object into smaller rectangular sections
Calculate the cubic inches of each section
Add the results together
If the object is cylindrical, use the formula: cubic inches = π × radius² × height
If the object is a cone or pyramid, use the appropriate volume formula and convert the result to cubic inches if needed
Make sure all measurements are in inches before calculating
Label the final answer as cubic inches or in³