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Average Persian Cat Weight by Age

My Persian cat Milo on the scales

The Persian cat is a medium-sized to large cat breed with a distinctive face and coat. The Persian was originally developed in Iran (formerly Persia) but is now found worldwide. The Persian is North America’s most popular pedigreed cat and the second most popular in the United Kingdom.

The Persian cat has an average lifespan of 15-20 years. However, these cats are prone to health problems like respiratory difficulties and obesity.

The best way to ensure your Persian cat stays healthy and doesn’t become obese is to monitor their weight. 

In this article, we’ll look at the average weight of Persian cats by age.

Average weight of a Persian cat by age

persian kittens

Kitten (up to 6 months old): Persian kittens should weigh between three and ten ounces or 85 to 283 grams from birth to one week. At one month, they should weigh up to a pound. At two months, they should reach two pounds; at three months, they should weigh three pounds or 1.3kg. Once they hit six months of age, they should be four pounds or 1.8kg.

You should start seeing your male cat get heavier than your female cat at nine months. Males should be up to eight pounds or 3.6kg and females seven pounds or 3.1kg. You should keep track of their weight until one year to ensure they grow as they should.

A Persian kitten will grow quickly during its first few months of life. After that, your kitten’s growth will start to slow down. However, ensuring that your kitten grows at a healthy rate is essential. You can do a few things to promote healthy growth in your Persian kitten. First, kittens need a protein, fat, and carbohydrate diet. Ensure they get plenty of exercise to help them build strong muscles and bones. Finally, give them regular check-ups with a veterinarian to ensure they are growing correctly.

juvenile persian kittens

Juvenile (7 months – 2 years old): By the time Persian cats are two years old, they should reach their maximum weight. Male Persian cats should weigh up to 12 pounds or 5.4kg, and female Persian cats up to 11 pounds or 4.9kg.

adult persian cat

Adult (3 – 6 years old): Persian cats are considered adults once they reach three years old. Between three and six years, Persian cats are considered adults. The average weight of an adult Persian cat is between eight and twelve pounds or 3.6 to 5.4kg. However, male Persian cats are larger than females, weighing up to fourteen pounds or 6.3kg. A female Persian cat should weigh closer to the high average of twelve pounds or 5.4kg.

Some cats may be larger or smaller than this range. Talk to your cat’s vet if you have concerns. They can help by giving you tips to keep your cat healthy. Maintaining a healthy weight is essential for all cats, especially Persian cats. These cats are prone to obesity, leading to several health problems.

Tips for keeping your Persian cat at a healthy weight:

  • Feed a high-quality diet that is appropriate for your cat’s life stage
  • Provide plenty of opportunities for exercise
  • Monitor your cat’s weight regularly
  • Talk to your veterinarian about your cat’s ideal weight
  • Following these tips can help your Persian cat stay healthy and happy.
senior persian cat

Senior (7 years and older): Persian cats are considered senior at seven years. Depending on metabolism, activity, or possible health issues, they may lose or gain weight as they age. A loss of a pound is common. However, if your Persian cat loses more than a pound, it should be checked by a vet to rule out illness. Your Persian cat may also gain weight as they age. This is perfectly normal and can be caused by decreased activity levels and metabolism. A little extra weight may not seem like a big deal, but it can cause health problems for your senior cat. As with humans, cats can have health issues as they age. Senior Persian cats typically weigh between 10 and 12 pounds or 4.5 to 5.4kg. However, some cats may be larger or smaller than this range.

My Persian cat Milo is now in this age range and his weight has been consistently around 4.5kg, which is a healthy weight for a Persian.

You can help your cat stay at a healthy weight by making sure they are getting enough exercise and eating right. In addition, you can encourage them to play by using toys, playing games, or walking with them.

Persian Cat Weight By Age

persian cat being weighed
Birth to 1 week3 to 10 oz or 85 to 283 grams 3 to 10 oz or 85 to 283 grams 
One Month12 oz to 1lb or 340 grams to 453 grams 12 oz to 1lb or 340 to 453 grams 
Two Months1 to 2lbs or 453 grams to 0.9kg1 to 2lbs or 453 grams to 0.9kg
Three Months2 to 3lbs or 0.9 to 1.3kg 2 to 3lbs or 0.9 to 1.3kg 
Six Months3 to 4lbs or 1.3 to 1.8kg 3 to 4lbs or 1.3 to 1.8kg 
Nine Months4 to 5lbs or 1.8 to 2.2kg3 to 4lbs or 1.3 to 1.8kg
One year5 to 8lbs or 2.2 to 3.6kg4 to 7lbs or 1.8 to 3.1kg
Two years8 to 12lbs or 3.6 to 5.4kg 7 to 11lbs or 3.1 to 4.9kg
(Adult) Three to Six years9 to 14lbs or 4 to 6.3kg 8 to 13lbs or 3.6 to 5.8kg
(Senior) Seven+ years7 to 12lbs or 3.1 to 5.4kg 6 to 10lbs or 2.7 to 4.5kg


Persian cats are prone to obesity, so monitoring their weight and ensuring they’re getting enough exercise is essential.

  • Feed them a high-quality diet rich in protein and low in calories.
  • Make sure they get plenty of exercise. An excellent way to do this is to get them a cat tree or scratching post to promote activity.
  • Avoid giving them too many treats. Treats should only make up a small part of their diet.

Following these tips can help prevent your Persian cat from becoming overweight. You can help your Persian cat slim down by ensuring they’re not eating too much or too often. You may also want to increase their activity level. Consult with your vet before changing your Persian cat’s diet or exercise. They can help you create a safe and effective plan for your cat.


Persian cats generally gain weight at a steady rate until they reach around three years of age. After that, they may gain more slowly or even lose weight. However, it is essential to closely monitor your Persian cat’s weight, as they are prone to obesity. You can prevent your Persian cat from becoming overweight by feeding them a healthy diet and providing plenty of exercise. Please leave any comments or questions below.

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