Maine Coon Size Guide: Growth, Weight, Length ; Full Grown Chart

By Namaste Zen Pet • Updated September 2025

📏 How Big Do Maine Coons Get?

The Maine Coon is the largest domesticated cat breed in the world. On average:

  • Males: 15–25 lbs (6.8–11.3 kg), up to 40 inches (100 cm) long
  • Females: 10–15 lbs (4.5–6.8 kg), slightly shorter and lighter
  • Height: 10–16 inches (25–40 cm)
Large orange Maine Coon cat resting on a blanket indoors
Full-grown male Maine Coon relaxing indoors.

🐱 Maine Coon Growth Chart by Age

Maine Coons grow slower than most cats, often taking 3–5 years to reach their full adult size.

Age Male Avg. Weight Female Avg. Weight
4 months 5–7 lbs 4–6 lbs
6 months 9–11 lbs 7–8 lbs
1 year 15–18 lbs 10–11 lbs
2 years 20–22 lbs 12–13 lbs
3–5 years 23–25 lbs 13–15 lbs
Gray Maine Coon cat standing on a wooden surface while being petted
Maine Coon growth continues until 3–5 years old.

👩🦰 Male vs Female Maine Coon Size

Male Maine Coons are generally larger and heavier than females, often weighing 20–25 lbs at maturity. Females are smaller at 10–15 lbs, but some exceptional females can rival smaller males.

⚖️ Maine Coon Weight by Age

Male Maine Coon

  • 6 months: 9–11 lbs
  • 1 year: 15–18 lbs
  • 2 years: 20–22 lbs
  • 3–5 years: 23–25 lbs

Female Maine Coon

  • 6 months: 7–8 lbs
  • 1 year: 10–11 lbs
  • 2 years: 12–13 lbs
  • 3–5 years: 13–15 lbs

📐 Maine Coon Length & Height

Adult Maine Coons typically measure 30–40 inches in length (including their bushy tail) and stand 10–16 inches tall at the shoulder. Their tails alone can reach up to 14 inches.

Majestic orange Maine Coon sitting outdoors in tall grass
The Maine Coon’s length and tail make them stand out among cats.

⏳ When Do Maine Coons Stop Growing?

Most domestic cats stop growing by one year, but Maine Coons are different. They continue to develop until they are 3–5 years old, gradually building muscle and bone density. By their second year, they have reached about 80% of their adult size.

🐾 Maine Coon Size vs Other Cat Breeds

Breed Male Avg. Weight Female Avg. Weight
Maine Coon 20–25 lbs 10–15 lbs
Norwegian Forest 13–22 lbs 9–18 lbs
Ragdoll 15–20 lbs 10–15 lbs
Savannah 12–25 lbs 10–18 lbs
Persian 9–14 lbs 7–11 lbs

🏆 Record-Breaking Maine Coons

A few extraordinary Maine Coons have earned their place in history:

Barivel — Current Record Holder

According to Guinness World Records, Barivel from Italy holds the record as the longest domestic cat at 47.2 inches.

Stewie — The Gentle Giant

Before Barivel, Stewie from Nevada, USA measured 48.5 inches and was beloved for his calm nature.

Tip for Maine Coon owners: Large cats need playtime to avoid obesity and joint stress. Try our Interactive Cat Toy to keep your gentle giant fit and happy.

🎥 Photography Tricks That Exaggerate Size

Many viral photos make Maine Coons look even larger than they are by using forced perspective photography. When held closer to the camera, a Maine Coon can appear almost dog-sized. While these tricks exaggerate size, it’s true that Maine Coons are naturally massive compared to most cats.

❓ FAQs on Maine Coon Size

Do all Maine Coons grow huge?

No, genetics, diet, and lifestyle all influence their final size.

Can Maine Coons weigh 30 lbs naturally?

Some can, but most healthy adults range from 15–25 lbs.

When do Maine Coons stop growing?

They reach full size between 3–5 years of age.

Are Maine Coons bigger than dogs?

They can be longer than some small dog breeds like Dachshunds or Shih Tzus.

📚 Related Guides

 

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