How to use the pee pad size and count calculator
Measure body length from the nose tip to the base of the tail. Pick an allowance factor and the tool gives the minimum pad side, and once you add potty trips per day and how many trips one pad takes, it also gives pads per day, pads per month and the packs you need to buy.
There is no official pad size standard and no size conversion chart. Two pads both labelled large can differ by inches between brands, so as of October 2026 you still have to read the printed dimensions. The tool therefore picks no size label; it reports the minimum side from body length times your chosen factor and prints the formula it used.
Absorbency, thickness and holder compatibility are out of scope. This tool is for reference only and does not replace veterinary care. Contact your veterinarian right away if you notice symptoms or suspect a problem, such as a sudden rise or drop in how often your pet goes.
Frequently asked questions
No. Two pads both labelled large can differ by inches between brands, so this tool only computes a minimum pad side from body length times the factor you pick.
You cannot buy half a pad, so quantities needed are rounded up, while how long one pack lasts is rounded down so you are never short.
A sudden rise in frequency can itself be a sign of illness. This tool works out quantities only and does not judge the cause.