Free Daily Water Intake Calculator Online
Calculate your optimal daily water intake based on body weight, activity level, and climate. Get hydration goals in liters, cups, and glasses with hourly reminders. — 100% free online utility, zero sign-up, zero paywalls, and private client-side processing.
How It Works
Enter Body Weight
Input current weight in kg or lbs.
Select Activity Level
Choose activity level from sedentary to athlete-level training.
Set Climate/Environment
Select cool, temperate, or hot/humid climate conditions.
View Hydration Target
See recommended daily water intake in liters, cups, and suggested drinking schedule.
Frequently Asked Questions
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