Estimate your daily water needs. A common starting point is 30–35 ml per kg of body weight, adjusted for activity.
How it works
- Enter your weight in kilograms.
- Select your typical activity level.
- See the suggested daily water intake in liters and ounces.
Frequently asked questions
Is 8 glasses enough?
8 glasses (~2 L) is a rough average. Needs vary by weight, climate, and exercise.
Does coffee count?
Yes, most beverages contribute to fluid intake, though water is best for pure hydration.
When should I drink more?
Hot weather, intense exercise, or illness increases needs.