Which cat calculator do I need?
- Feeding portions: the cat food calculator works out daily calories and splits them between dry food (cups) and wet food (cans), so mixed feeding doesn't lead to overfeeding.
- Age in human years: the cat age calculator converts cat years to human years (about 15 at one year, 24 at two, then roughly 4 per year) and shows your cat's life stage.
- Is a food safe? Our can cats eat guides give clear verdicts on common foods, with a treat calculator or toxicity check sized to your cat's weight.
- Expecting kittens? The cat pregnancy calculator gives a due date (about 63-65 days) and a week-by-week timeline.
- Growing kitten? The kitten growth chart shows healthy weight by week and month.
- Healthy weight: the cat weight chart covers 20 breeds and estimates ideal weight from body condition.
- Water: the cat water calculator shows how much your cat should drink on wet or dry food.
- Houseplants: check our plants toxic to cats list; lilies can cause kidney failure.
Why portion control matters for cats
Many indoor cats are overweight, which raises the risk of diabetes, arthritis and urinary problems. A typical spayed or neutered indoor cat needs only about 1.2 × its resting energy, which is around 200-280 kcal a day for most adult cats. Weigh your cat monthly and adjust portions gradually. Never put a cat on a crash diet, because rapid weight loss can cause fatty liver disease.