How Big do Maine Coon Cats Get
May 4, 2025
A Complete Maine Coon Cat Size Chart Breakdown
When you first lay eyes on a Maine Coon, one thing is instantly clear: this cat is massive. But what actually determines just how big your Maine Coon kitten will grow? And how can you track their growth over time? In this guide, we’ll dive deep into the maine coon cat size chart, examine maine coon weight by age, and help you understand everything from genetics to nutrition. Whether you’re a curious new pet parent or a seasoned Maine Coon lover, this comprehensive article will provide the ultimate growth maine coon size chart and insights for your gentle giant.
What Determines Maine Coon Weight?
Genetics: The Blueprint of Giant Cats
Your Maine Coon’s genes are the biggest predictor of its eventual size. If your kitten comes from a lineage of large, healthy cats, there’s a strong chance they’ll grow into a heavyweight themselves. Still, size can vary even within the same litter. That’s why referring to a reliable maine coon cat size chart can help manage expectations.
Diet and Nutrition: Fueling Growth
You can’t build a skyscraper without a strong foundation—and in the feline world, that foundation is high-protein, high-quality nutrition. A Maine Coon’s diet should support muscle development, skeletal growth, and overall health. Poor nutrition can stunt development and prevent your cat from reaching their genetically-predicted size.
Gender Differences
On average, male Maine Coons weigh more and grow larger than their female counterparts. But don’t underestimate the girls—some female Maine Coons can grow nearly as large as smaller males.
Spaying and Neutering
There’s ongoing debate about whether early spaying or neutering impacts size. While early alteration may slow bone plate closure, most vets agree that it doesn’t drastically affect final maine coon weight.
Exercise and Activity
A growing Maine Coon needs room to move! Active kittens who jump, climb, and chase build stronger bones and lean muscle, which contribute to healthier weight gain.
Maine Coon Kittens For Sale
Waterlily – Male
$700.00Inesa
$700.00Tattoo
$500.00Asty – Male
$550.00Trinity
$700.00Heather – Male
$550.00Zigzag – Female
$500.00Demmy – Male
$700.00Ali – male
$700.00Oracle
$550.00Edgar
$500.00Verra
$450.00Gustavo
$700.00Diana – Female
$700.00Dillya
$300.00Dasha – Male
$700.00
Maine Coon Weight by Age
To understand how Maine Coons grow, we’ll reference real data from Sassy Koonz, a trusted Maine Coon breeder. These charts will give you a snapshot of maine coon weight by age, separated by gender.
Male Maine Coon Size Chart
| Name | 4 Months | 6 Months | 1 Year | 2 Years | 3 Years | 5 Years |
|---|---|---|---|---|---|---|
| Finlay | 4.8 lb | 8.8 lb | 14.8 lb | 15.8 lb | 16.5 lb | 19 lb |
| Omega | 7.1 lb | 9.8 lb | 22 lb | 27.9 lb | 29 lb | 32 lb |
| Biggie | 4.2 lb | 9.8 lb | 17.1 lb | 22 lb | 26 lb | 29 lb |
| Beastie | 7 lb | 9.5 lb | 18 lb | 21 lb | 22 lb | – |
| Average | 5.7 lb | 9.5 lb | 17.9 lb | 21.6 lb | 23.4 lb | 26.6 lb |
By adulthood, male Maine Coons often weigh between 20–25 pounds, though some can grow beyond 30 pounds.
Female Maine Coon Size Chart
| Name | 4 Months | 6 Months | 1 Year | 2 Years | 3 Years | 5 Years |
|---|---|---|---|---|---|---|
| Ursula | 5 lb | 6.4 lb | 10.3 lb | 10.6 lb | Retired | Retired |
| Tiffany | 4.9 lb | 7 lb | 9 lb | 10 lb | 10.8 lb | 14 lb |
| Magic | 5.0 lb | 8 lb | 10.5 lb | 12.5 lb | – | – |
| Chichi | 5.9 lb | 8.1 lb | 11.7 lb | 12 lb | 16 lb | 18 lb |
| Average | 5.6 lb | 7.5 lb | 10.7 lb | 11.8 lb | 13.1 lb | – |
Female Maine Coons usually weigh 10–15 pounds, but some exceed this with the right genes and care.
Growth Maine Coon Size Chart: From Kitten to King
Maine Coons are unlike typical cats in terms of growth rate. While most cats stop growing at 12 months, Maine Coons keep growing until age 3 to 5. Below is a simplified growth maine coon size chart to help you track progress:
| Age | Average Male Weight | Average Female Weight |
|---|---|---|
| 3 Months | 4.5 – 5.5 lb | 4 – 5 lb |
| 6 Months | 9 – 11 lb | 7 – 9 lb |
| 12 Months | 16 – 20 lb | 10 – 13 lb |
| 2 Years | 20 – 25 lb | 12 – 15 lb |
| 3–5 Years | 25 – 30+ lb | 13 – 18 lb |
How Long Does It Take a Maine Coon to Grow Fully?
The first year is the most dramatic growth phase. Your kitten may reach 80% of its final maine coon weight by 12 months. But full maturity takes patience.
You’ll watch your fluffball transform slowly—longer legs, broader shoulders, a lion-like mane. Around age 3, you’ll realize your cat is now a true Maine Coon: muscular, fluffy, and magnificent.
Maine Coon Size vs Other Breeds
To put their size in perspective, compare these average weights with other large breeds:
| Breed | Male Weight | Female Weight |
|---|---|---|
| Maine Coon | 20–25 lb | 10–15 lb |
| Norwegian Forest Cat | 13–22 lb | 9–18 lb |
| Ragdoll | 15–20 lb | 10–15 lb |
| Savannah | 12–25 lb | 10–18 lb |
Clearly, Maine Coons sit at the top of the domestic cat weight spectrum.
Be Wary of the “Giant Cat” Hype
Yes, Maine Coons are big—but not every big cat is a healthy cat. Some breeders falsely market their kittens as “giant Maine Coons,” but excessive size can come at a cost: hip dysplasia, heart problems, or joint stress.
Choose breeders who prioritize:
✅ Health-tested genetics
✅ Breed-standard size and temperament
✅ Long-term wellness over shock value
At Sassy Koonz, we don’t breed for exaggerated size. Our focus is on healthy, balanced Maine Coons that meet standard expectations on the maine coon cat size chart.
Just How Long is a Maine Coon?
A fully grown Maine Coon is impressive in every direction:
Height: 10–16 inches tall
Body Length: Up to 40 inches including the tail
Tail Length: As much as 14 inches long
Barivel, the current world-record holder, measures 47.2 inches long—longer than some small dogs!
Photography Tricks That Exaggerate Maine Coon Size
Many viral photos show enormous Maine Coons in people’s arms. Here’s a secret: it’s often a trick of perspective. When a cat is held closer to the camera, it looks gigantic compared to the person in the background.
While real-life Maine Coons are big, don’t fall for every photo online.
Final Thoughts
Raising a Maine Coon is a journey full of surprises, cuddles, and awe. Their transformation from kitten to majestic adult is slow but rewarding. Whether you’re using a maine coon cat size chart, monitoring maine coon weight by age, or keeping tabs with a personalized growth maine coon size chart, the joy is in the process.
If you’re in the process of adopting or already raising a Maine Coon, keep this guide handy. Use the maine coon weight to track weight milestones, catch issues early, and fully appreciate the grandeur of your growing feline friend.
