Hydration Calculator
Proper hydration is key to your health, performance, and mood. Use this calculator to estimate your daily water needs based on your body weight, activity level, and local weather conditions.
Your Details
Recommended Daily Intake
87 oz/day
This is an estimate. Listen to your body and drink when you feel thirsty.
The Science of Hydration
Water is essential for life, making up about 60% of your body weight. Every system in your body depends on water. For example, water flushes toxins out of vital organs, carries nutrients to your cells, and provides a moist environment for ear, nose and throat tissues. Lack of water can lead to dehydration, a condition that occurs when you don\'t have enough water in your body to carry out normal functions. Even mild dehydration can drain your energy and make you tired.
Factors Influencing Water Needs:
- Exercise: If you do any activity that makes you sweat, you need to drink extra water to cover the fluid loss.
- Environment: Hot or humid weather can make you sweat and requires additional fluid intake.
- Overall health: Your body loses fluids when you have a fever, vomiting or diarrhea.
- Pregnancy and breast-feeding: Women who are pregnant or breast-feeding need additional fluids to stay hydrated.
Signs of Dehydration:
Look out for symptoms like dry mouth, fatigue, dark-colored urine, and dizziness. Thirst isn\'t always a reliable early indicator of the body\'s need for water. Many people, particularly older adults, don\'t feel thirsty until they\'re already dehydrated. That\'s why it\'s important to increase water intake during hot weather or when you\'re ill.