Water fountain filter cost calculator
Enter what you pay for a filter pack, how many filters are in it and how often you swap them. We work out the yearly consumables cost.
Your inputs
What you actually pay for one pack, including tax and shipping.
Most makers print a recommended interval on the pack or in the manual.
Results update as you type. This runs in your browser — nothing is sent or stored.
Result
Estimated yearly cost: $97.77 /year
Filter changes per year: 14 /year
Cost per filter: $7.50 /filter
Worked examples (check the math)
$15 two-pack replaced every 4 weeks
| Filter pack price | 15 USD |
|---|---|
| Filters per pack | 2 filters |
| Replace every | 4 weeks |
| Estimated yearly cost | $97.77 /year |
|---|---|
| Filter changes per year | 14 /year |
| Cost per filter | $7.50 /filter |
$30 four-pack replaced every 6 weeks
| Filter pack price | 30 USD |
|---|---|
| Filters per pack | 4 filters |
| Replace every | 6 weeks |
| Estimated yearly cost | $65.18 /year |
|---|---|
| Filter changes per year | 9 /year |
| Cost per filter | $7.50 /filter |
$12 single filter replaced every 2 weeks
| Filter pack price | 12 USD |
|---|---|
| Filters per pack | 1 filters |
| Replace every | 2 weeks |
| Estimated yearly cost | $312.86 /year |
|---|---|
| Filter changes per year | 27 /year |
| Cost per filter | $12.00 /filter |
How this number is reached: The prices and interval are yours — we do not quote prices for you. The yearly figure is packs-per-year (365 days ÷ your interval) times per-filter cost, rounded to the cent; actual usage depends on pet count and water hardness. Prices were verified at time of writing, see each product page.