Siamese Weight Chart by Age
Track your Siamese 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 | 90 g | 90 g |
| 1 Week | – | – |
| 4 Weeks | 425 g | 425 g |
| 8 Weeks | 850 g | 850 g |
| 12 Weeks | 1350 g | 1350 g |
How fast should a Siamese kitten grow?
Siamese kittens are slender and fast-growing. They are very vocal and active, which indicates good health. Weight should always increase proportionally to body length.
When do Siamese cats stop growing?
Siamese cats typically grow for 24 months before reaching their full adult weight.
Red flags: When to worry
- Unusual silence — Siamese kittens are normally very vocal
- Weight not increasing proportionally to body length
- Diarrhea lasting more than 2 days
- Kitten isolating itself from the mother
Siamese weight: frequently asked questions
- How much should a newborn Siamese kitten weigh?
- A healthy newborn Siamese kitten typically weighs between 70 g and 110 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 Siamese weigh?
- At 8 weeks most Siamese kittens weigh roughly 600–1100 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 Siamese weigh?
- By 12 weeks a Siamese kitten is usually around 900–1800 g, with males trending toward the upper end of the range and females toward the lower end.
- When does a Siamese stop growing?
- A Siamese reaches its full adult size at about 2 years (roughly 24 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 Siamese 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.