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Filter Calculator

Use our handy filter calculator to determine how long your Black Berkey filters and PF-2 fluoride filters will last before needing replacement.

Black Berkey Filter
Replacement Calculator

Choose Your System

Number of black filters installed:

Number of times the system is
filled Per Week
:


Results

PF-2 Fluoride Filter
Replacement Calculator

Choose Your System

Number of PF-2 fluoride filters installed:

Number of times the system is
filled Per Week
:


Results

The results calculated represent the longest possible time you could expect the filters to last under ideal conditions. However, because water qualities differ, you may have to replace your filters sooner than what is calculated.

Filter Calculator Copyrighted by GetBerkey.com