How much to feed a Siamese
A Siamese usually weighs 5.5–8.8 lb. Here’s how much food that is per day, plus a calculator for your own food.
Typical weight
- males
- 6.2–8.8 lb
- females
- 5.5–7.3 lb
Source: LMU München (Kienzle & Moik 2011), Katzen bei Idealgewicht
In an LMU Munich study, neutered Siamese/Oriental Shorthair cats were rarely overweight.
Feeding chart by weight
Example: dry food with 400 kcal/cup, wet food with 28 kcal/oz.
| Weight | kcal/day | Dry | Wet |
|---|---|---|---|
| 5.5 lb | 167 | 0.42 cups | 6.0 oz |
| 6.5 lb | 189 | 0.47 cups | 6.8 oz |
| 7.5 lb | 210 | 0.53 cups | 7.5 oz |
| 9 lb | 241 | 0.60 cups | 8.6 oz |
For spayed or neutered cats with normal activity. Intact cats need about 17% more. The amounts only apply to food with exactly these calories; use the calculator below for yours.
Calculate with your food
per day
222 g per day
2 meals of 111 g · 200 kcal per day
Treats up to 20 kcal
Look for “Calorie Content”, e.g. “3,750 kcal/kg, 375 kcal/cup”.
A starting point – the scale has the final say. If your cat is ill, talk to your vet.
Questions
How much should a Siamese eat per day?
A Siamese weighing 7 lb, spayed or neutered with normal activity, needs about 200 kcal a day. That’s about 0.50 cups of dry food or 7.1 oz of wet food with the calories from the chart. Use the calculator above for your food.
How much does a Siamese weigh?
According to LMU München (Kienzle & Moik 2011), Katzen bei Idealgewicht, adult males weigh 6.2–8.8 lb and females 5.5–7.3 lb.
My cat weighs more than this. Is that too much?
Not necessarily. The range is for typical cats; large or muscular cats can weigh more. Your cat’s shape tells you more than the number: you should feel the ribs and see a waist from above. If in doubt, ask your vet.
Sources
- LMU München (Kienzle & Moik 2011), Katzen bei Idealgewicht
- Kienzle E, Moik K (2011): A pilot study of the body weight of pure-bred client-owned adult cats. Br J Nutr 106:S113–S115 (LMU München; Table 1, cats at ideal BCS 5)
Last checked: October 2026