Find out newborn kitten size in pounds

Average Kitten Weight

When it comes to newborn kittens, their size and weight can vary greatly. The size of a kitten at birth depends on various factors, including its breed, genetics, and the health of the mother cat. In this article, we will explore the average weight of newborn kittens and provide insights into what factors can influence their size.

How Much Does a Newborn Kitten Weigh?

newborn kitten size in pounds

The weight of a newborn kitten is typically measured in ounces rather than pounds, as they are incredibly tiny at birth. On average, a newborn kitten weighs between 3 to 4 ounces (85 to 113 grams). However, it's important to note that this is just an average, and there can be significant variations from one kitten to another.

The size and weight of a newborn kitten can also depend on its breed. Different cat breeds have different average weights at birth. For example, a Siamese kitten tends to be smaller and lighter compared to a Maine Coon kitten, which is known for its large size even at birth.

Newborn Kitten Weight

It is crucial to monitor the weight of newborn kittens, especially during the first few weeks of their lives. Weight gain is a sign of healthy growth and development. A steady increase in weight indicates that the kitten is nursing well and receiving an adequate amount of nutrition from its mother's milk.

During the first week, it is normal for a kitten to gain approximately 10-15 grams per day. By the end of the first week, their weight should have doubled compared to their birth weight. In the following weeks, the weight gain may slow down a little, but they should still be steadily gaining weight.

If you notice that a newborn kitten is not gaining weight or is losing weight, it may indicate an underlying issue. In such cases, it is essential to consult a veterinarian for a proper evaluation and guidance on how to care for the kitten.

Newborn Kitten Size in Pounds

As mentioned earlier, newborn kittens are typically weighed in ounces rather than pounds due to their small size. However, for those who prefer to know the weight in pounds, a newborn kitten usually weighs around 0.2 to 0.3 pounds (2.8 to 4.4 ounces).

It's important to remember that a newborn kitten's weight can fluctuate slightly throughout the day, so it's best to take multiple measurements to get a more accurate average weight. Using a small digital scale specifically designed for weighing small animals can help provide precise measurements.

As the weeks go by, newborn kittens will gradually gain weight and grow in size. By the time they are four weeks old, their weight can range from 0.5 to 1 pound (8 to 16 ounces), depending on their breed and overall health.

It's worth mentioning that the weight and size of a kitten can also be influenced by environmental factors, such as the quality and availability of food, as well as any medical conditions that may affect their growth.


In summary, the average weight of a newborn kitten is around 3 to 4 ounces (85 to 113 grams), with slight variations depending on factors like breed and genetics. Monitoring a kitten's weight gain is important to ensure they are growing healthily. By the time they reach four weeks of age, their weight can range from 0.5 to 1 pound (8 to 16 ounces). Remember, if you have any concerns about a kitten's weight or growth, it is always best to consult a veterinarian for professional advice.