How this calculation works
Calculate the combined volume of identical rectangular items using dimensions in feet. Quantity multiplies the volume of one item, and the result also shows cubic metres. Use the general Volume Calculator for nonrectangular solids rather than treating curved objects as full boxes.
Volume in ft³ = length in ft × width in ft × height in ft × quantity. Volume in m³ = ft³ × 0.028316846592.
Worked example
This example uses illustrative inputs. Your current result is shown above.
One item measuring 10 ft × 8 ft × 1 ft occupies 10 × 8 × 1 × 1 = 80 ft³. Multiply by 0.028316846592 to obtain approximately 2.265348 m³.
Assumptions and limits
- Dimensions must be in decimal feet; 6 ft 6 in is entered as 6.5 ft, not 6.6.
- Quantity is a positive whole number and all items have the same dimensions.
- The calculation is geometric volume, not a shipping carrier’s chargeable volumetric weight or a packing efficiency estimate.
Questions people ask
How do I enter feet and inches?
Divide the inches by 12 and add them to the feet. Do that separately for length, width and height before calculating.
Can I use this for several different box sizes?
Calculate each size with its own quantity and add the volumes. One row assumes all items have identical dimensions.