Water Intake Calculator
Find out how much water to drink each day based on your weight and how much you exercise. Free, no signup.
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Frequently Asked Questions
- How is the target calculated?
- It uses roughly 35 ml per kilogram of body weight, plus an extra 350 ml for every hour of exercise.
- Does coffee or tea count?
- Yes, in practice most fluids count toward hydration. Alcohol is the main exception because it is a diuretic.
- Can I drink too much water?
- Yes, though it is rare. Drinking far more than your kidneys can process in an hour can dilute blood sodium dangerously.