Norwegian Forest Cat Weight Chart by Age
Track your Norwegian Forest Cat kitten's growth against global breed standards.
Save the growth curve
Want to track growth over time and receive medical alerts when weight drops?
| Age | Male avg | Female avg |
|---|---|---|
| Birth | 115 g | 115 g |
| 1 Week | – | – |
| 4 Weeks | 525 g | 525 g |
| 8 Weeks | 1250 g | 1250 g |
| 12 Weeks | 1750 g | 1750 g |
How fast should a Norwegian Forest Cat kitten grow?
Norwegian Forest Cats grow slowly and reach full size at 4–5 years. They are robust and muscular. Compared to other breeds, they show a moderate weight gain in the first 8 weeks, which then accelerates.
When do Norwegian Forest Cat cats stop growing?
Norwegian Forest Cat cats typically grow for 54 months before reaching their full adult weight.
Red flags: When to worry
- Birth weight below 90 g
- Birth weight not doubled by week 2
- Stagnation for more than 3 days in the first 8 weeks
- Siblings with significantly higher weight (possible Fading Kitten Syndrome)
Norwegian Forest Cat weight: frequently asked questions
- How much should a newborn Norwegian Forest Cat kitten weigh?
- A healthy newborn Norwegian Forest Cat kitten typically weighs between 90 g and 140 g. Weigh every kitten on the same scale at the same time each day for the first two weeks — steady daily gain matters more than the absolute number.
- How much should an 8-week-old Norwegian Forest Cat weigh?
- At 8 weeks most Norwegian Forest Cat kittens weigh roughly 900–1600 g. The interactive chart above plots the full healthy band so you can see exactly where one kitten falls.
- How much should a 12-week-old Norwegian Forest Cat weigh?
- By 12 weeks a Norwegian Forest Cat kitten is usually around 1300–2200 g, with males trending toward the upper end of the range and females toward the lower end.
- When does a Norwegian Forest Cat stop growing?
- A Norwegian Forest Cat reaches its full adult size at about 4.5 years (roughly 54 months). Most visible weight gain happens in the first 12 weeks, then growth continues more slowly toward the adult frame.
- How do I track my Norwegian Forest Cat kitten's growth?
- Enter a current weight in the tool above to plot it against the breed curve. To follow every weigh-in over time, felineStudio is cattery software that charts each kitten's growth, flags slow gainers automatically and keeps the full health record per cat.