The Water Intake Calculator estimates how much water you should drink each day based on your body weight and activity level. Staying properly hydrated supports energy levels, physical performance, digestion, and overall health.
Use this calculator to estimate your recommended daily water intake.
How Daily Water Intake Is Estimated
Water intake recommendations are often based on body weight. A common guideline is approximately 33 milliliters of water per kilogram of body weight per day.
This calculator multiplies your body weight by this guideline and adjusts the result based on activity level. Higher activity levels increase water requirements because the body loses more fluids through sweat.
Other factors such as climate, diet, and health conditions may also influence how much water you should drink each day.