Calculate your daily water needs based on weight, activity level, and climate. Stay hydrated with personalized recommendations.
Proper hydration enhances concentration, memory, and mood while reducing headaches and fatigue.
Adequate water intake improves endurance, reduces fatigue, and helps prevent muscle cramps during exercise.
Drinking water before meals can reduce appetite and boost metabolism, supporting healthy weight loss.
Sufficient water helps kidneys filter waste, prevents kidney stones, and reduces urinary tract infections.
Hydration maintains skin elasticity, reduces wrinkles, and helps prevent dryness and acne.
Water helps regulate body temperature through sweating and respiration, especially in hot climates.
| Age Group | Daily Water Intake (Liters) | Cups (8 oz) | Key Considerations |
|---|---|---|---|
| Children (4-8 years) | 1.1 - 1.3 L | 5-6 cups | Encourage regular drinking, especially during activity |
| Children (9-13 years) | 1.5 - 1.7 L | 6-7 cups | Increase during sports and hot weather |
| Teens (14-18 years) | 1.8 - 2.6 L | 7-10 cups | Active teens need more, especially athletes |
| Adults (19+ years) | 2.0 - 3.7 L | 8-15 cups | Varies by gender, activity, climate, and health |
| Pregnant Women | 2.3 - 3.1 L | 9-12 cups | Increased needs for fetal development and amniotic fluid |
| Breastfeeding Women | 2.6 - 3.8 L | 10-15 cups | Additional fluid needed for milk production |
| Elderly (65+ years) | 1.5 - 2.0 L | 6-8 cups | May have reduced thirst sensation; monitor closely |
Get accurate water intake recommendations based on your weight, activity level, climate, and personal factors.
Receive comprehensive results in liters, cups, glasses, and bottles with a personalized hydration schedule.
Switch between metric (kg/liters) and imperial (lbs/ounces) systems with a single click for your convenience.
Accounts for pregnancy, breastfeeding, illness, and other special conditions that affect hydration needs.
Works perfectly on all devices including smartphones, tablets, and desktop computers.
All calculations are done locally in your browser. Your data never leaves your computer.