Calculate your personalized daily water intake based on weight, activity level, and climate. Get hourly hydration schedule and tips. Pure client-side.
Staying properly hydrated is essential for overall health. This calculator uses a scientifically-based formula that takes your body weight, physical activity level, and environmental climate into account to provide a personalized daily water intake recommendation. The general guideline is to drink approximately 35ml of water per kilogram of body weight, adjusted for activity and climate. All calculations happen in your browser — no data is sent to any server.
A general rule is about 35ml per kilogram of body weight. For a 70kg person, that is roughly 2.5 liters per day. However, activity level and climate significantly affect your needs.
Yes, moderate consumption of coffee and tea contributes to hydration. While they have a mild diuretic effect, the fluid content still counts.
Yes, excessive water intake can lead to hyponatremia (low sodium levels). Stick to the recommended amount and increase gradually if needed.
Absolutely. During exercise, you lose water through sweat. Drink extra water before, during, and after physical activity to stay hydrated.