Water intake, dehydration risk, electrolyte, and rehydration calculators.
Based on peer-reviewed medical guidelines from WHO, CDC, and AHA.
All calculations run in your browser. No data leaves your device.
Get immediate clinical interpretations and personalized insights.
Most used by healthcare professionals
8 tools available
Find your recommended daily water intake.
Evaluate your dehydration risk during exercise and daily activities.
Determine if you need sports drinks or water during exercise.
Determine electrolyte requirements during exercise.
Check if you're properly hydrated right now.
Plan your pre-exercise hydration strategy.
Determine fluid needs after dehydration.
Get your complete daily fluid intake recommendation.
These calculators are for educational and informational purposes only. They are not intended to replace professional medical advice, diagnosis, or treatment. Always consult with a qualified healthcare provider for personalized medical guidance.
Our hydration calculators provide evidence-based tools for healthcare professionals, patients, and students. Each calculator is developed using established clinical guidelines and validated formulas from recognized medical authorities.
All formulas and clinical interpretations are based on guidelines from the World Health Organization (WHO), Centers for Disease Control (CDC), American Heart Association (AHA), and other recognized medical authorities.
