Health•Free tool
Water Intake Calculator – How Much Water Daily
Calculate your recommended daily water intake based on weight, activity and climate. Get liters, glasses and bottles.
No sign-upBrowser-based
HLT
Tool
Enter your values and get results instantly.
HOW
How to Use
- 1Enter your weight\n2. Select your activity level\n3. Choose the climate\n4. See your daily water target
WIN
Benefits
Personalized calculation
Activity and climate factors
Liter, glass and bottle units
Instant result
Free and private
FAQ
Frequently Asked Questions
How is water intake calculated?
A base amount per kg of body weight (about 33 ml/kg) is adjusted upward for activity and hot climates.
What is the general rule?
A common guideline is 2-3 liters per day for most adults, but needs vary with weight, activity and heat.
Does food count?
About 20% of daily water comes from food. The tool shows your total target, so your drinking plan can be slightly less.