The short answer: Adult Maine Coon cats typically weigh between 5.9 and 8.2 kilograms (about 13 to 18 pounds), with males generally larger than females.
Maine Coon weight by type
As one of the largest domestic cat breeds, the Maine Coon shows a clear sex difference. Here are typical figures.
| Type (example) | Typical weight |
|---|---|
| Kitten (3 months) | About 1.5 to 2.5 kg (3.3 to 5.5 lb) |
| Adult female | About 3.6 to 5.5 kg (8 to 12 lb) |
| Adult male | About 5.9 to 8.2 kg (13 to 18 lb) |
| Large male | Up to roughly 11 kg (24 lb) |
What affects Maine Coon weight
- Sex. Males are noticeably larger and heavier than females.
- Age. Maine Coons are slow to mature, reaching full size at around three to five years.
- Genetics. Bloodlines vary, so some cats are simply bigger than others.
- Diet and activity. Overfeeding can push a cat above its healthy weight.
- Neutering. Altered cats may gain weight more easily without diet control.
How Maine Coon weight compares
A large Maine Coon at about 8 kg weighs roughly twice as much as an average house cat, or about the same as a small bowling ball.
Frequently asked questions
How big do Maine Coons get?
Maine Coons usually weigh 5.9 to 8.2 kilograms as adults, with large males occasionally reaching around 11 kilograms. They are among the largest domestic cat breeds.
When do Maine Coons reach full size?
Maine Coons mature slowly and may not reach their full adult weight until three to five years of age.
Are male Maine Coons bigger than females?
Yes. Males typically weigh several pounds more than females and have a larger, more robust frame.
