Calculate packing ratio from object and container volumes, or estimate how many identical items fit in a container by volume using common volume units.

Volume capacity is an upper bound. Shape, clearances, packaging and weight limits can reduce the number that fits.

Shipping-container examples: 33.2, 67.7 or 76.3 mยณ; verify your actual container.

Packing Ratio Formula

The following formula is used to calculate the packing ratio for a given object volume and container volume.

PR = Vโ‚’ / Vc

Variables:

  • PR is the packing ratio
  • Vo is the volume of the object
  • Vc is the volume of the container

To calculate the packing ratio, divide the volume of the object by the volume of the container. Use the same volume units. The ratio measures volume occupancy, not geometric fit. Whole-item capacity is floor(container volume / single-object volume), a volume-only upper bound that ignores shape, clearances, packaging and weight limits.

What is a Packing Ratio?

The packing ratio is a measure of how efficiently an object occupies space within a container. It is calculated by dividing the volume of the object by the volume of the container. A higher packing ratio indicates that the object occupies a larger proportion of the container’s volume, while a lower packing ratio indicates that the object occupies a smaller proportion of the container’s volume. This concept is commonly used in fields such as logistics, material science, and packaging design to optimize space utilization and improve efficiency.

How to Calculate Packing Ratio?

The following steps outline how to calculate the Packing Ratio.


  1. First, determine the volume of the object (Vo).
  2. Next, determine the volume of the container (Vc).
  3. Finally, calculate the packing ratio using the formula PR = Vo / Vc.
  4. After inserting the values and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

Volume of the object (Vo) = 50 mยณ

Volume of the container (Vc) = 100 mยณ

PR = 50 / 100 = 0.5, or 50% of container volume.