Water Intake Estimator
Estimate a sensible daily fluid range based on your weight, activity level and climate. Hydration needs vary - this is a planning tool, not a strict prescription.
Your estimate
Enter your details and press Estimate.
What the estimate means
Weight-based
A common planning baseline is about 30-35 ml per kilogram of body weight per day.
Activity & climate
More movement and hotter conditions increase fluid losses, so the estimate adds a buffer.
Water in food
Fruits, vegetables and soups contribute to daily fluid, so total intake is not all from drinks.
Frequently asked questions
How much water should I drink?
There is no single number for everyone. Use the estimate as a guide, drink when thirsty, and adjust for activity and heat.
Can I drink too much water?
Yes - very large amounts in a short time can be dangerous. Keep intake sensible and spread through the day.
Do tea and coffee count?
They contribute to fluid intake. Caffeine is not dehydrating at normal amounts, but limit it late in the day for better sleep.