Pool Filter Size Calculator

A Pool Filter Size Calculator estimates the appropriate filter size based on your pool’s volume and desired turnover rate. By inputting your pool’s capacity and turnover time, it calculates the minimum flow rate and recommends a matching filter size in gallons per minute (GPM). This ensures efficient water circulation and optimal filtration.

Pool Shape:

Length (ft):

Total length of the pool

Width (ft):

Total width of the pool

Diameter (ft):

Total diameter of the pool

Longest Length (ft):

The longest length of the oval pool

Widest Width (ft):

The widest width of the oval pool

Longest Length (ft):

The longest length of the kidney pool

Widest Width (ft):

The widest width of the kidney pool

Length A (ft):

Width A (ft):

Length B (ft):

Width B (ft):

Longest Length (ft):

The longest length of the irregular pool

Widest Width (ft):

The widest width of the irregular pool

Average Depth (ft):

The average depth of the entire pool

Filter Type:

Turnover Time (hours):

The desired time for all water to pass through the filter once (recommended: 8 hours)

Required Filter Size:

sq. ft.