How It Works
Proper hydration is crucial while traveling—dehydration can cause fatigue, headaches, and impair judgment. Your water needs increase significantly with physical activity and hot temperatures. This calculator provides personalized estimates based on established hydration science.
Signs of Dehydration
Mild dehydration shows as thirst, dark urine, and fatigue. Moderate dehydration includes dizziness, dry mouth, and reduced urination. Severe dehydration is a medical emergency requiring immediate fluid replacement and medical attention.
💡 TipDon't wait until you're thirsty to drink—by the time you feel thirsty, you're already slightly dehydrated. Set reminders to drink regularly, especially on flights and in arid climates.