Kitten Growth Chart Calculator

Kittens gain about 1 pound per month for the first 6 months. A healthy kitten typically weighs about 3-4 oz at birth, 1.5-2 lbs at 8 weeks, and 5-7 lbs at 6 months. Most domestic cats reach adult size between 12-18 months, while large breeds like Maine Coons may grow until 3-4 years.

A domestic shorthair typically reaches 8-12 lbs. You can estimate adult weight by doubling the weight at 16 weeks, or multiplying the weight at 8 weeks by 3-4. Large breed kittens (Maine Coon, Ragdoll) can reach 15-25 lbs. Genetics, nutrition, and spay/neuter status all influence final size.

Most cats should transition to adult food at 12 months of age. Large breeds (Maine Coon, Norwegian Forest Cat) benefit from staying on kitten food until 18-24 months due to their prolonged growth period. Transition gradually over 7-10 days by mixing increasing amounts of adult food.