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Water Intake Calculator
Calculate your personalized daily water intake needs based on your weight, activity level, climate, and lifestyle factors.
Personal Information
Moderate exercise or sports
Comfortable temperatures year-round
Do not use this figure if you are on a fluid restriction
If you have heart failure, kidney disease, liver cirrhosis or low blood sodium, or you take diuretics or medication that affects fluid balance, your doctor may have set a daily limit far lower than anything this page will show. That limit is the one to follow. This calculator does not know your medical history and cannot account for it.
Why Hydration Matters
- Regulates body temperature through sweating
- Transports nutrients to cells
- Helps remove waste products
- Maintains blood pressure
- Supports cognitive function
Signs of Dehydration
Mild: Thirst, dry mouth, less urination
Moderate: Headache, dizziness, fatigue
Severe: Rapid heartbeat, confusion, fainting
Urine color check: Pale yellow = well hydrated, dark yellow = dehydrated
Hydrating Foods & Drinks
High water content foods:
- Watermelon, cucumber, oranges
- Lettuce, tomatoes, bell peppers
- Soups and broths
- Yogurt and milk
Hydrating drinks: Water, herbal teas, coconut water
Dehydrating Factors
- Alcohol consumption
- High caffeine intake
- High sodium foods
- Intense exercise
- Hot weather
- Certain medications
- Illness (fever, vomiting)
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