An adult domestic cat typically weighs between 3 and 5 kg, and most domestic cats land somewhere between 3.5 and 4.8 kg. But there is no single definitive figure that applies to all cats. How much a cat should weigh depends on breed, sex, age and, not least, body build. A slim cat weighing 5 kg can be in fine shape, while a cat weighing 3.5 kg may well be overweight if it has a slight bone structure. That is why the number on the scales is only half the answer - the rest lies in how the cat feels when you touch it.
The normal weight for an adult domestic cat is between 3 and 5 kg
For the ordinary European domestic cat, that is the household cat most people have at home, the normal weight is around 3 to 5 kg. Female cats usually weigh a little less than male cats, because they generally have a finer bone structure and less muscle mass. A male cat weighing just under 5 kg and a female cat weighing 3.5 kg can therefore both be perfectly normal. It is very rare for a domestic cat to weigh over 5 to 5.8 kg without being overweight, and if the weight approaches 6 kg, in most domestic cats this is a sign that too many kilos have been added. The average thus covers a broad range, where the heaviest normal cat can weigh almost twice as much as the lightest. For an adult cat in normal shape, meals for adult cats are a good starting point for keeping the weight stable.
Large breeds such as the Maine Coon and the Norwegian Forest Cat weigh far more
The breed shifts the range significantly, and here the rule of thumb of 3 to 5 kg does not hold. A Norwegian Forest Cat typically weighs between 4 and 8 kg as an adult depending on sex, while a Maine Coon, one of the world's largest domestic cat breeds, can weigh 5 to 9 kg for females and all the way up to 7 to 12 kg for males. British Shorthairs and Siberian cats also weigh more than the ordinary domestic cat. Conversely, there are light breeds such as the Devon Rex and the Siamese, which can weigh as little as 2.5 to 3 kg and still be in perfect shape. Another thing that often surprises is the pace: large breeds grow slowly. A Maine Coon is rarely fully grown before four to five years of age, so the weight continues to rise longer than in an ordinary domestic cat.
How to assess your cat's condition by feel rather than by weight
Because the variation is so great, vets do not rely on weight alone, but on a method called the Body Condition Score, that is, an assessment of the cat's body shape based on how it feels. You can do the same at home. Gently feel along the cat's rib cage: you should be able to feel the ribs through a thin layer of fat, without them protruding visibly, and without having to press hard to find them. Seen from above, the cat should have a hint of a waist behind the ribs, and seen from the side, the belly should not hang down in a distinct pouch of fat. If you cannot feel the ribs at all, the cat is probably overweight. If you can clearly see them without touching the cat, it is probably underweight. This method is far more useful than the number alone, precisely because two perfectly normal cats can easily weigh 3.5 and 5 kg respectively.
A kitten's weight follows a steep curve during the first year
A kitten develops quickly, and its weight is a good indicator that growth is progressing as it should. At birth it weighs around 100 g regardless of breed, and from there the curve rises steadily: about 500 g at one month, around 1.7 kg at three months, and typically 4 kg somewhere between the sixth and eighth month. Most cats reach their adult weight around one year of age, when the weight begins to stabilise, while the very large breeds take longer to become fully grown. During the growth period, the kitten needs nutritious meals for kittens that match the high energy needs of a rapidly growing body. If you bring a kitten home, it is a good idea to weigh it regularly during the first few months, so that you notice early if the curve breaks.
Neutering changes the cat's weight and energy needs
When a cat is spayed or neutered, its metabolism and appetite change, and many cats put on weight more easily afterwards. A cat that is neutered around six months of age often puts on a little extra during growth, and as an adult it should overall not significantly exceed the recommended weight for its breed. Here feeding is absolutely crucial, because the neutered cat burns fewer calories but would like to eat just as much as before. Tailored meals for neutered cats are formulated with precisely this in mind, so the cat becomes full without getting more calories than it needs. Keep an extra eye on the weight in the months after the procedure, when the risk of creeping weight gain is greatest.
Why the right weight matters for your cat's wellbeing
A healthy weight is not about appearance, but about quality of life. Being overweight strains the joints, makes it difficult for the cat to keep its coat clean and increases the risk of a range of diseases, while sudden weight loss can be an early sign that something is wrong. That is exactly why regular weighing is worth making a habit, because a slow change of a couple of hundred grams at a time is hard to see with the naked eye, but easy to spot on the scales. The foundation for a stable weight is laid in the bowl every day, and meals made from exquisite, human-grade ingredients with a high content of animal protein give the cat the nutrition its body is built for. You will find the entire range of cat meals gathered in one place. If you are unsure how much your cat should eat, or whether it is at the right weight, you can always contact ESSENTIAL FOODS' nutrition advisers, who are ready on phone, chat or email with guidance on feeding and nutrition. If, on the other hand, you experience unexplained weight loss, weight gain or other signs of poor health, a vet is always the right place to start.