Cat calculators
Free calculators for cat owners. Convert your cat’s age to human years, estimate a kitten’s age week by week, and work out daily calories and how much wet or dry food to feed. Each tool cites its source.
Which tool do I need?
| If you want to… | Use |
|---|---|
| Convert your cat’s age to human years | Cat years calculator |
| Estimate a kitten’s age week by week | Kitten age chart |
| Work out daily calories and cans or cups | Cat food calculator |
Questions
Are these cat calculators free?
Yes. Every tool is free and runs in your browser, with no account needed. Each one shows the formula and the source it uses, so you can check the working yourself.
Where do the numbers come from?
From sources like International Cat Care, the AAHA/AAFP feline life stage guidelines and the Pet Nutrition Alliance. Each page links its sources and the date we checked them.
Is this veterinary advice?
No. These tools give estimates for general information. Cats hide illness well, so for anything about your cat’s health, weight or diet, ask your vet.