Daily Water Intake Calculator – How Much Should I Drink?

Use our free hydration calculator to find your exact daily water needs based on weather, weight, and activity level.

Location-based

Science-backed

Instant results

Select Your Location

Search your city or use geolocation—HydrationMap uses local temperature, humidity, and altitude to calculate your personalized daily water intake.

Provide your personal details to get the most accurate hydration recommendations.

Personal Information