10 free calculators
Cat calculators
Age in human years and life expectancy, kitten weight and feeding, daily calories, ideal weight, heat cycles, due dates, litter boxes and yearly costs. Each calculator shows its formula, worked examples and the sources behind it.
- Cat age in human yearsHuman-year equivalent from the International Cat Care chart, plus the AAFP/AAHA life stage.
- Cat food and caloriesDaily calories from weight and life stage, then cups per day from your food's kcal per cup.
- Cat pregnancy due dateDue date window from the mating date, with the usual and the full observed range.
- Cat ideal weight (BCS)Rough ideal weight from current weight and the 9-point body condition score.
- Yearly cost of a catYearly and first-year cost, starting from ASPCA estimates you can change.
- How long do cats live?Average life expectancy by sex and type (US) and by breed (UK).
- How much to feed a kittenDaily calories and cups for a growing kitten, from its weight today.
- Kitten and cat weight chartNormal kitten weights for weeks 1–8, age from weight, and typical adult cat weight.
- Cat heat cycle calculatorWhen this heat should end and when the next one is due, from its first day.
- How many litter boxes?Number of boxes for your cats and floors, and the minimum box size.
All results are educational estimates based on published averages. For your own pet, your veterinarian has the final word.