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Calculators
Water Intake Calculator - How Much Water Should I Drink
Water Intake Calculator - How Much Water Should I Drink
Find out how much water you should drink daily
Calculators
Calculator
Reset
Weight
(kg)
Activity Level
Sedentary
Moderate Exercise
Very Active
Climate
Temperate
Hot/Humid
Cold
Calculate
Reset
How to Use
1
Enter your body weight
2
Select your activity level
3
Select your climate
4
Click Calculate to see recommended daily water intake
Frequently Asked Questions
Is the 8 glasses a day rule true?
The 8 glasses (2L) rule is a rough guideline. Actual needs vary based on weight, activity, and climate. This calculator gives a personalized estimate.
Does coffee count as water intake?
Coffee and tea do contribute to hydration, but caffeine has a mild diuretic effect. Water is the best hydration source.
How do I know if I am dehydrated?
Common signs include dark yellow urine, thirst, dry mouth, fatigue, and headaches. Clear or light yellow urine indicates good hydration.