Enter the body weight of the cat into the calculator to determine the daily water intake; this calculator can also evaluate the body weight, given the daily water intake is known.

Cat Water Intake Formula

The following formula is used to calculate the daily water intake for a cat:

WI = (BW * 0.67) + (0.033 * BW)

Variables:

  • WI is the daily water intake for the cat
  • BW is the body weight of the cat

To calculate the daily water intake for a cat, multiply the body weight of the cat by 0.67, then add 0.033 times the body weight of the cat to the result.

What is a Cat Water Intake?

A cat’s water intake refers to the amount of water a cat consumes in a day, which is crucial for its overall health and well-being. Water is essential for a cat’s bodily functions, including digestion, waste removal, nutrient absorption, and temperature regulation. The amount of water a cat needs can vary based on several factors, including its size, age, diet, and activity level. Generally, a cat should consume about 3.5-4.5 ounces of water per 5 pounds of body weight daily. Cats that eat wet food may consume less water as their food already contains a high percentage of water. However, if a cat is not drinking enough water, it can lead to dehydration, which can cause serious health problems. Therefore, it’s important for cat owners to monitor their cat’s water intake and ensure they are drinking enough each day.

How to Calculate Cat Water Intake?

The following steps outline how to calculate the Cat Water Intake.


  1. First, determine the amount of water consumed by the cat in milliliters (ml).
  2. Next, determine the weight of the cat in kilograms (kg).
  3. Next, gather the formula from above = Cat Water Intake = Water Consumed (ml) / Weight of Cat (kg).
  4. Finally, calculate the Cat Water Intake.
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem:

Use the following variables as an example problem to test your knowledge.

Water Consumed (ml) = 300

Weight of Cat (kg) = 4