Quick Answer
Browse cat growth charts and weight ranges below. Use our breed-specific charts to track if your pet is on target.
📅
12 mo
Full size reached
⚖️
1 lb/mo
Kitten growth rate
🐈
10 lbs
Avg adult weight
🦁
4 years
Maine Coon growth time
📏Growth & Size Facts
The 1 Pound Rule
Healthy kittens typically gain 1 pound per month until 6 months old.
Spaying/Neutering
Fixing a cat can slow their metabolism. Monitor weight to prevent obesity after surgery.
Primordial Pouch
A saggy belly flap is normal in adult cats and doesn't necessarily mean they are overweight.
Breed Matters
Maine Coons and Ragdolls grow slowly and aren't "fat"—they are just big boned.
Frequently Asked Questions
How much should my cat weigh?
An average domestic cat weighs 8-12 lbs. You should be able to feel (but not see) ribs. If you can't feel ribs, they may be overweight.
When is a cat fully grown?
Most cats are fully grown by 12 months. Large breeds like Maine Coons keep growing until 3-4 years old.
More Cat Resources
Track Your Pet's Growth
Create a free profile for your cat to log weight checks, set reminders, and see personalized growth charts.
Start Tracking FreeTrusted sources: AKC Breed Standards · AVMA Pet Care