Water Calculator

Imperial Metric
Enter your current weight:
Minutes of Exercise Daily:

Calculating Result...
Enter your current weight:
Minutes of Exercise Daily:

Calculating Result...

Water Calculator Introduction

Why is water intake so important?

Water is essential for the body to work properly. Daily water intake must be calculated according to the weight and lifestyle of each person as it is important that the body receives the right amount of fluids for his needs.

Meeting your daily water requirements will keep you away from dehydration, increase your performance and even take you on the way to a healthier, leaner body. 

The total fluid intake consists of water, other beverages drunk and water from foods eaten. According to the Institute of Medicine, about 80 percent of the water you consume each day comes from water and beverages, and about 20 percent is derived from the foods.

When you know the daily water consumption, you can also calculate the hourly water requirement by dividing the amount obtained to the hours you are awake during day. For example, an active 150-pound person that sleeps 8 hours per night should drink 8 oz water every hour.

How about children’s water intake?

The water calculator can even estimate how much water a child should drink. This is a sensible issue as a proper level of hydration helps the kid develop properly, maintain a healthy weight and good concentration levels.

Therefore it is especially important to keep track of the fluid intake of the child. Especially because the little ones do not always ask for water, by the time a toddler realizes he is thirsty he may already be mildly dehydrated.

A child’s daily intake of fluids varies with age, weight and gender, temperature, activity levels and overall health condition.

What if it is too little or too much?

Knowing exactly what your body wants is essential otherwise you can fall on either side. You might drink too little water and be prone to dehydration, with symptoms like headaches, fatigue, heartburn, or lack of concentration.

Or you might have too much water and have a risk to develop hyponatremia or water intoxication that triggers cell ruptures in different parts of the body and symptoms like vomiting, headaches, confusion and later seizures and coma.