
How Long Can You Go Without Water? What Happens to Your Body
Survival without water runs from a few hours to over a week, set by heat, effort and health. What happens in the body, who is at risk, and when to get help.
Log daily water intake, set a goal from your weight, and get drink reminders. Data stays on your phone.
Everything you need to build lasting hydration habits
Customizable notifications throughout your day to keep you on track with your hydration goals
Beautiful visual statistics showing your daily, weekly, and monthly hydration journey
Science-based recommendations tailored to your weight, activity level, and climate
Log your water intake in seconds with one-tap recording designed for busy lifestyles
Track your patterns over time and see how your habits improve week by week
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Sync with Apple Health and Google Fit to adjust goals based on your activity.
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Stay motivated with fun badges and milestones for your progress
Track your daily hydration streak and unlock health benefits as your body adapts. Each milestone brings real improvements to your wellbeing.













Better energy and focus throughout the day
Improved physical performance and endurance
Healthier, more radiant skin
Better digestion and metabolism
Get your personalized daily water intake recommendation based on your body, lifestyle, and environment.
Sources: U.S. National Academies of Sciences (2005), Mayo Clinic, American College of Sports Medicine (ACSM), European Food Safety Authority (EFSA).
Methodology: 30ml/kg body weight • +10% for males (higher muscle mass) • +250-750ml based on exercise intensity • +400ml for hot conditions
⚠️ Disclaimer: This calculator provides general estimates. Individual needs vary based on health conditions, medications, and other factors. Consult healthcare providers for personalized advice. Signs of proper hydration include pale yellow urine and adequate energy levels.
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View All ArticlesWater Tracker offers a free version with core hydration tracking features. Premium features are available through optional subscriptions.
All your data is stored locally on your device. We don't collect or share any personal information.
Yes. Water Tracker is a water tracker app for iPhone and Android. Log daily intake, set a hydration goal, and get drink reminders. Data stays on the device: no account required.
Absolutely! Set personalized goals based on your weight and activity level.
Set customizable reminders throughout the day to help you stay on track with your hydration goals.