Orange Maine Coon
September 8, 2025
How Big do Maine Coons Get?
September 8, 2025
Maine Coon Size Chart
When I brought home my Maine Coon kitten, Pippin, I was determined to give him the best life. I spent countless hours researching Maine Coon size chart to ensure he grew up healthy and strong.
In this article, I’ll share everything I’ve learned about Maine Coon growth, from their early kitten days to full maturity. You’ll discover essential tips and advice to help your Maine Coon thrive at every stage of their life.
Whether you’re a seasoned cat owner or new to the world of Maine Coons, this guide is designed to provide you with the knowledge and tools to support your furry friend’s development.
What Is A Maine Coon Size Chart?
A Maine Coon size chart is a tool used to track and predict the developmental milestones of Maine Coon cats as they grow from kittens to adults.
Many cat owners like to keep track of their majestic felines’ growth rate since these large cats are known for their substantial size, with male Maine Coons growing up to 22 lbs in weight, and female Maine Coon cats ranging between 12-15 lbs.
Did you know these large domestic cats are also known for their slow growth rate, not reaching full maturity until 3-5 years?
A growth chart gives pet owners peace of mind as they can cross-check their Maine Coon’s weight with average.
Available Maine Coon Kittens
Why Use A Maine Coon Size Chart?
Here are a few benefits of keeping track of a purebred Maine Coon cat’s weight:
Monitor Healthy Growth: Tracking a cat’s weight helps owners spot potential growth problems early.
Diet & Nutrition: It’s vital to feed a Maine Coon high-quality food packed full of protein, minerals and nutrients. Your gentle giant needs proper nutrition to grow to its potential. Tracking a cat’s weight helps identify possible nutritional issues early.
Veterinary Care: Regularly tracking your cat’s growth provides valuable information to your veterinarian.
Peace of Mind: A growth chart provides reassurance that a kitten is on the right track and helps them understand what to expect as their Maine Coon matures.
Key Features Of Growth Chart
You will find the following information in high-quality maine coon size chart:
1. Age Milestones
The chart breaks down the growth stages into specific age ranges, such as weekly and monthly intervals for young kittens as they age.
2. Weight Range
For each age milestone, the chart indicates the average weight range you can expect for a healthy Maine Coon. This helps cat owners monitor their kitten’s growth and ensure they are developing appropriately.
3. Developmental Stages
The chart may include descriptions of typical physical and behavioral developments at different ages. For example:
When a kitten should start eating solid food
When a cat’s adult teeth come in
When the cat typically reaches full adult size
4. Sex Differences
Growth charts often differentiate between male and female Maine Coons, as males are generally larger and heavier than females.
5. Health Indicators
If a kitten’s growth significantly deviates from the expected range, it might indicate nutritional deficiencies or other that need to be addressed by a veterinarian.
How To Keep A Maine Coon Growth Chart
When completing a Maine Coon growth chart, you should be measuring:
Weight
Length
Height
Weight is a crucial indicator of growth and overall health, while length and height provide insights into the cat’s physical development.
It’s recommended that these measurements be tracked regularly during kittenhood, approximately every 1-2 weeks, to monitor growth patterns and ensure healthy development.
As the cat matures, measurements can be taken less frequently, such as monthly or every few months, to assess continued growth and overall well-being.
What You’ll Need
Find the following things, and have them by your side:
- Small Scale: It is a good idea to get a postage scale, baby scale, or vet scale to measure your cat, as human scales are not accurate enough to measure cats.
- Measuring Tape: Since cats often find measuring tape a fun toy, you should get a sturdy yet flexible measuring tape to record your cat’s dimensions.
- Notebook or Graph Paper: You can plot your cat’s progress using a notebook, graph paper, or even online tools like Excel.
- A Willing Partner: Maine Coons are typically known to be laidback and gentle felines, however, you may want to ask someone else to be your assistant so you can maneuver your cat into the necessary positions.
- Treats: Keeping plenty of treats handy will keep your Maine Coon cooperative, and it will help them to associate this task with positive interaction.
How To Measure A Cat
Measure your Maine Coon once a month, preferably within thirty or so days each time. It is best if you select a date at the same time each month.
1. Length
Lay your cat on its side and gently stretch it to its full length. Measure in a straight line from the tip of your cat’s nose to the base of its tail.
2. Height
To measure your cat’s height, make sure it is standing straight up! Place the measuring tape at the top of your cat’s front shoulder and run the tape down its front leg to the floor.
3. Weight
Place your cat on the scales to record its weight. This is usually one of the easier steps so you might want to save it for last if your cat’s patience begins to wear thin!
4. Record
Record all of your cat’s dimensions in your chart or graph. Take this chart with you to the vet so your vet has a more solid idea of your cat’s growth rate.
Average Maine Coon Weight By Age
The table below shows the average weight of a Maine Coon cat, by age:
| Age | Male Kitten kg /lbs | Female Kitten kg/lbs |
|---|---|---|
| Newborn | 90 – 170 g (0.19 – 0.37 lb) | 90 – 150 g (0.19 – 0.33 lb) |
| 1 Week | 190 – 290 g (0.41 – 0.63 lb) | 160 – 260 g (0.35 – 0.57 lb) |
| 2 Weeks | 290 – 430 g (0.63 – 0.94 lb) | 280 – 410 g (0.61 – 0.90 lb) |
| 3 Weeks | 430 – 600 g (0.94 – 1.32 lb) | 410 – 550 g (0.90 – 1.21 lb) |
| 1 Month | 620 – 820 g (1.36 – 1.80 lb) | 550 – 740 g (1.21 – 1.63 lb) |
| 2 Months | 1.1 – 1.6 kg (2.42 – 3.52 lb) | 1 – 1.4 kg (2.20 – 3.08 lb) |
| 3 Months | 1.7 – 2.4 kg (3.74 – 5.29 lb) | 1.5 – 2.3 kg (3.30 – 5.07 lb) |
| 4 Months | 2.9 – 3.8 kg (6.39 – 8.37 lb) | 2.5 – 3.5 kg (5.51 – 7.71 lb) |
| 5 Months | 3.3 – 5.5 kg (7.27 – 12.1 lb) | 2.7 – 4.2 kg (5.95 – 9.25 lb) |
| 6 Months | 3.4 – 6 kg (7.49 – 13.22 lb) | 3.1 – 4.3 kg (6.83 – 9.47 lb) |
| 7 Months | 4.1 – 6.5 kg (9.03 – 14.33 lb) | 3.3 – 4.6 kg (7.27 – 10.14 lb) |
| 8 Months | 4.4 – 6.9 kg (9.7 – 15.22 lb) | 3.7 – 5 kg (8.15 – 11.02 lb) |
| 9 Months | 5 – 7 kg (12.56 – 15.43 lb) | 4.1 – 5.2 kg (9.03 – 11.46 lb) |
| 10 Months | 5.1 – 7.8 kg (11.24 – 17.19 lb) | 4 – 5.5 kg (8.81 – 12.12 lb) |
| 11 Months | 5.5 – 8 kg (12.12 – 17.63 lb) | 4.3 – 6 kg (9.47 – 13.22 lb) |
| 12 Months | 5.8 – 9 kg (12.78 – 19.84 lb) | 4.5 – 6.5 kg (9.92 – 14.33 lb) |
How Quickly Do Maine Coons Grow?
The following guide gives you an idea of how big you can expect your Maine Coon cat to grow:
Section 1: Early Kittenhood (0-3 Months)
In the first three months, Maine Coon kittens experience significant growth. Their rapid growth during this period is crucial for their overall development.
Newborns typically weigh between 90-170 grams at birth. By the end of the first month, their weight increases to around 450-600 grams. At three months, they usually weigh between 1.2 to 2.3 kilograms.
Feeding Guidelines
During this stage, kittens should primarily be nursing from their mother. If the mother’s milk is not available, a high-quality kitten milk replacer should be used.
Developmental Changes
Kittens will start opening their eyes around 7-10 days and begin walking at three weeks. By five weeks, they will play actively, honing their motor skills.
Social interactions with littermates and humans are essential during this period to foster proper behavioral development. Handling them gently and frequently helps them become well-socialized cats.
Section 2: Kitten Growth (3-6 Months)
Between three and six months, Maine Coons undergo substantial growth spurts. Their weight increases rapidly, often reaching 2.5 to 3.5 kilograms by six months.
You may notice their limbs becoming longer and their bodies filling out, indicating healthy development.
Diet Adjustments
To support their rapid growth, kittens need a diet rich in high-quality proteins and fats. Feed them kitten-specific food that provides essential nutrients.
Multiple small meals throughout the day ensure they receive adequate nutrition without overloading their digestive systems. Include both wet and dry food to promote hydration and dental health.
Health Checkups
Regular veterinary visits are crucial during this period to:
- Monitor Growth
- Administer Vaccinations
- Check For Congenital Issues
- Vets will advise on deworming and flea prevention. Discuss spaying or neutering with your vet, as this is typically done around six months of age.
Section 3: Adolescence (6-12 Months)
During their adolescent months, Maine Coons continue to grow in size and weight, although the growth rate slows compared to the earlier stages.
By 12 months, they can weigh between 4 to 6.5 kilograms. They will start developing their muscular build and long, luxurious fur, characteristic of the breed.
Nutritional Needs
Feed your Maine Coon a high-quality diet formulated for kittens or young cats to support ongoing growth. Ensure their diet is balanced and includes essential vitamins and minerals.
Behavioral Developments
Adolescence brings about significant behavioral changes. Maine Coons may become more independent and exhibit playful, sometimes mischievous behaviors. Training and socialization are essential to manage their energy and develop good habits.
Use positive reinforcement techniques to encourage desired behaviors and provide plenty of interactive toys to keep them engaged.
Section 4: Young Adulthood (1-3 Years)
Between one and three years, growth rates begin to stabilize, but Maine Coons can still gain weight and muscle mass.
By three years, they typically weigh between 5.5 to 8.5 kilograms, with some males reaching up to 10 kilograms.
They attain their full height and length during this period, showcasing their impressive size.
Adult Diet
Transition to a high-quality adult cat food that meets your cat’s nutritional needs without promoting excessive weight gain.
Monitor the Maine Coons weight and adjust portions as necessary to maintain a healthy weight.
Ensure their diet is:
- Rich in proteins
- Moderate in fats
- Low in carbohydrates
Exercise and Enrichment
Maine Coons are active and intelligent cats. Provide them with plenty of opportunities for physical exercise and mental stimulation.
Section 5: Full Maturity (3-5 Years)
By the age of five, Maine Coons have reached their full size and weight. Males typically weigh between 18-22 lbs (7-10 kg), while females usually weigh between 12-15 lbs (5-7.5 kg).
At full maturity, they boast a robust build, bushy tails, and a thick, luxurious coat, with males generally being larger than females.
Maintaining Health
- Regular Vet Checkups: Schedule routine veterinary visits to monitor their health.
- Balanced Diet: Provide a nutritious diet tailored to their needs.
- Consistent Exercise: Encourage regular physical activity to keep them fit.
- Dental Health: Pay close attention to dental hygiene, as Maine Coons are prone to dental problems.
Common Health Issues
The most common Maine Coon health problems are as follows:
- Hip Dysplasia: A genetic condition where the hip joint doesn’t fit snugly into the hip socket, leading to arthritis and mobility issues.
- Hypertrophic Cardiomyopathy (HCM): A heart condition characterized by the thickening of the heart muscle, which can lead to heart failure.
- Dental Disease: Common dental problems include periodontal disease and tooth resorption, leading to pain, tooth loss, and infection.
- Spinal Muscular Atrophy (SMA): A genetic disorder affecting the spinal cord, leading to muscle weakness and atrophy. There is no cure, but supportive care and physical therapy can improve the quality of life.
- Polycystic Kidney Disease (PKD): A genetic condition causing fluid-filled cysts to form in the kidneys, leading to kidney failure.
