Water Intake Calculator
Calculate your recommended daily water intake based on weight, activity level, and climate. Track your hydration with an interactive glass counter — completely free.
2520
Milliliters / day
11
Glasses / day
0%
Hydration Tips
- Start your day with a glass of water right after waking up
- Drink a glass of water 30 minutes before each meal
- Drink extra water before, during, and after exercise
- Eat water-rich fruits and vegetables like watermelon and cucumber
Frequently Asked Questions
The Water Intake Calculator estimates your recommended daily water intake based on your body weight, physical activity level, and climate conditions. It also includes an interactive tracker to help you monitor how much water you drink throughout the day.
The base formula is weight (kg) × 30 ml. This is then adjusted by activity level multiplier (1.0–1.6) and climate multiplier (0.9–1.2). For example, a 70 kg person with moderate activity in a temperate climate needs approximately 2,520 ml per day.
Physical activity increases water loss through sweat. Sedentary individuals need the base amount, while very active people may need up to 60% more water. The calculator adjusts automatically based on your selected activity level.
Yes, completely free with no registration required. All calculations happen in your browser — no data is stored or sent to any server.