Overview
What Is a Water Intake Calculator?
This tool estimates your daily recommended water intake based on your body weight, using a common formula of about 30-35 mL per kg of body weight.
Estimate your daily water needs instantly.
This tool estimates your daily recommended water intake based on your body weight, using a common formula of about 30-35 mL per kg of body weight.
Useful as a general reference point for daily water intake, though individual needs vary based on activity, climate, and health.
Input your weight in kilograms.
The result updates automatically.
This uses a common formula of approximately 30-35 mL per kilogram of body weight as a baseline estimate.
No, this is a baseline at rest - increase intake with physical activity, heat, or illness.
The '8 glasses' rule is a popular guideline, though actual needs vary by individual factors like weight, activity, and climate.
Yes, other beverages and water-rich foods also contribute to overall hydration.
Yes, increase water intake during hot weather, exercise, or when experiencing fluid loss from illness.
Yes, excessive water intake can lead to a dangerous condition called hyponatremia - moderation and individual medical guidance matter.
No, certain medical conditions affect fluid needs - consult a healthcare provider for personalized guidance.
No, calculations happen entirely in your browser.
No, this is a general estimation tool - consult a healthcare provider for personalized hydration guidance.
Yes, completely free with no sign-up required.