Measure the length, width, and height in inches
Multiply length × width × height
Use the formula: cubic inches = L × W × H
For cylinders, use: cubic inches = π × radius² × height
For irregular shapes, divide into smaller measurable shapes and add their cubic inches
Convert from cubic feet by multiplying by 1,728
Convert from cubic centimeters by dividing by 16.387
Convert from liters by multiplying by 61.024
Use consistent units in inches before calculating