How much water should you drink daily? Use our hydration calculator to get a personalised recommendation based on your weight and activity level.
You can customise your daily intake according to your specific needs, so you don’t overhydrate or underhydrate. You can optimise your water consumption by entering your weight (kg) and other factors.
Hydration Calculator
Estimate your daily water intake needs based on your age, weight, and activity level.
Hydration Table
| Age | Recommended Daily Water Intake |
|---|---|
| Children (4-8 years) | 1.2 liters/day |
| Children (9-13 years) | 1.5 liters/day |
| Adolescents (14-18 years) | 2.1 liters/day (female), 2.4 liters/day (male) |
| Adults (19-30 years) | 2.7 liters/day (female), 3.7 liters/day (male) |
| Adults (31-50 years) | 2.7 liters/day (female), 3.7 liters/day (male) |
| Adults (51+ years) | 2.7 liters/day (female), 3.7 liters/day (male) |
The Science Behind Hydration: Why Accurate Water Intake Matters
Hydration is crucial for maintaining vital body functions, including digestion, circulation, temperature regulation, and joint lubrication.
Your cells, tissues, and organs will function best if you drink enough water.
Using a Hydration Calculator, you can determine how much water to drink based on your weight, age, and activity level.
Statistic:
(1) More than 60% of the human body is water, and dehydration can lead to fatigue, dizziness, and even kidney damage. NHS Hydration Recommendation
(2) Research shows that optimal hydration can improve energy levels by up to 30% and enhance cognitive function
(3) For every kilogram of body weight, you should drink about 30 ml of water, roughly 2-3 litres per day for most adults” (Hydration for Health).
FAQs
Q1: What is the best way to calculate my daily water intake based on my weight?
The Hydration Calculator can help you determine how much water you should consume based on your weight (in kilograms) as well as other factors, such as your activity level and the climate.
Q2: How accurate is the Hydration Calculator?
The Hydration Calculator provides a scientifically based estimate. For highly personalised advice, it is always preferred to consult a healthcare professional, especially if you have a unique health condition.
Q3: Does it matter how much water I drink?
Yes, excessive water consumption can cause water intoxication, a rare but serious condition. This tool provides balanced, personalised hydration recommendations to avoid over- and under-hydration.
For more information, you can watch this video:
https://www.healthline.com/health/video/how-much-water-should-you-drink-per-day#1