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Cat Weight vs Age

See your cat's expected weight based on age and breed

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๐Ÿ‡ฉ๐Ÿ‡ฐ All calculations are based on Danish rules, rates, and currency (DKK). This calculator is translated for convenience but applies exclusively to Denmark.

Cat weight vs age calculator

Our calculator shows the expected weight for your cat based on age and breed. Cats grow and develop at different rates depending on breed, and knowing your cat's expected weight is important for ensuring optimal health.

Growth curve varies by breed

A common domestic cat typically reaches its adult weight of about 4 kg by 12 months. Maine Coon cats grow much more slowly and may continue growing until 36 months, when they can weigh up to 7 kg on average. Persian cats reach their adult weight of about 4.5 kg by 14 months.

The four life stages

A cat's life is divided into four stages: Kitten (0-6 months) with rapid growth, Junior (7-24 months) where the cat reaches adult size, Adult (2-10 years) with stable weight, and Senior (10+ years) where weight may decline or increase depending on health.

What if your cat doesn't follow the curve?

Minor deviations are perfectly normal โ€“ all cats are individuals. If your cat deviates significantly from expected weight, it could be due to genetics, diet, activity level or health issues. Contact your vet if you're concerned about your cat's weight.

Monitoring your cat's weight

It's recommended to weigh your cat regularly โ€“ at least monthly for kittens and every 3-6 months for adult cats. Sudden weight loss or gain can be a sign of illness and should be examined by a vet.

Frequently Asked Questions

When is a cat fully grown?

Most domestic cats are fully grown by about 12 months. Large breeds like Maine Coon may continue growing up to 3 years. Persian cats are typically fully grown by 14 months. Even when a cat has reached full height, it may continue filling out in muscle mass.

How much does a Maine Coon weigh?

An adult Maine Coon typically weighs 5.5-8 kg for males and 4.5-6.5 kg for females, averaging about 7 kg for males. It's one of the largest cat breeds. They grow more slowly than other breeds and may continue growing until age 3.

What are the four life stages of cats?

The four life stages are: 1) Kitten (0-6 months) with rapid growth and need for kitten-specific food. 2) Junior (7-24 months) where the cat matures and reaches adult size. 3) Adult (2-10 years) with stable weight and maintenance needs. 4) Senior (10+ years) with changing needs and need for more frequent vet visits.

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