Water Intake Calculator

Find out how much water you should drink daily based on your body and lifestyle
liters per day

Why Hydration Matters

Proper hydration improves energy levels, brain function, digestion and skin health. Even mild dehydration (1-2%) can impair concentration and physical performance. The classic "8 glasses" is a minimum — most people need more.

Why Hydration Matters

Water makes up about 60% of your body weight and is essential for every cellular function. Even mild dehydration (1-2% of body weight) can impair concentration, reduce physical performance, and cause headaches.

Proper hydration supports: digestion and nutrient absorption, body temperature regulation, joint lubrication, skin health, kidney function, and cognitive performance.

How Much Water Do You Really Need?

The classic "8 glasses a day" (2 liters) is a minimum. Actual needs vary based on:

Body weight: A common formula is 30-35 ml per kg of body weight (e.g., 70 kg × 33 ml = 2.3 L).
Activity: Every 30 minutes of exercise requires an additional 300-500 ml of water.
Climate: Hot or humid weather increases fluid loss through sweat. Add 300-500 ml in hot conditions.

Tips for Staying Hydrated

Drink a glass of water when you wake up, carry a water bottle with you, set reminders on your phone, eat water-rich foods (cucumbers, watermelon, oranges, celery), and track your intake with Anna Life in Telegram.

Individual hydration needs vary. Color of urine (pale yellow = hydrated, dark = need water) is a practical daily indicator.

Track your water with AI

Log water in Telegram, get reminders, see your weekly hydration trends.

🚀 Open in Telegram