Enter the internal diameter and length of the hose into the calculator to determine the hose capacity. This calculator can also evaluate any of the variables given the others are known.

Hose Capacity Formula

The following formula is used to calculate the hose capacity.

HC = π * (d/2)^2 * L

Variables:

  • HC is the hose capacity (cubic units)
  • d is the internal diameter of the hose (units of length)
  • L is the length of the hose (units of length)

To calculate the hose capacity, first divide the internal diameter of the hose by 2 and then square the result. Multiply this by pi (approximately 3.14159). Then, multiply this result by the length of the hose. The result is the hose capacity, or the maximum amount of fluid or gas that the hose can carry at any given time.

What is a Hose Capacity?

Hose capacity refers to the maximum amount of fluid or gas that a hose can carry or transport at any given time. It is determined by the internal diameter of the hose and its length. The capacity is an important factor to consider when choosing a hose for specific applications, as it directly impacts the efficiency and speed of the fluid or gas transfer.

How to Calculate Hose Capacity?

The following steps outline how to calculate the Hose Capacity.


  1. First, determine the internal diameter of the hose (d) in units of length.
  2. Next, determine the length of the hose (L) in units of length.
  3. Next, gather the formula from above = HC = π * (d/2)^2 * L.
  4. Finally, calculate the Hose Capacity.
  5. After inserting the variables 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.

internal diameter of the hose (d) = 10 units of length

length of the hose (L) = 5 units of length