Tools
Free calculators and matchers. Every number comes from a formula you can inspect, or from manufacturer-published specs — never from a hands-on test we did not run.
Tools (3)
- Tool
Litter box size matcher
Tell us how many cats and how heavy the largest one is. We size the box from published entry widths and weight ratings and list the models in our coverage that fit.
- Tool
Feeder portion calculator
Daily food estimate from the published resting-energy formula (70 × weight in kg to the 0.75 power) times a life-stage maintenance factor, then converted to cups.
- Tool
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.