Free Tool
Water Intake Calculator
Personalized daily hydration based on your body, lifestyle, and environment.
10+ FactorsDaily Schedule
More accurate than basic calculators
Weight, activity, climate, altitude, caffeine, alcohol, diet and health
Most water calculators only use weight. Ours factors in 10+ variables for a truly personalized result.
About you
Weight, age, sex and activity are required
Biological sex
Activity level
Climate
Current weather where you are
Advanced options
Altitude, caffeine, alcohol, diet and health
Fill in weight, age, sex, and activity level to continue
What makes this different
10+ variablesActivity, climate, altitude, caffeine, and more
Drinking scheduleWhen and how much to drink through your day
Track itUse your result with the Water Tracker widgetMore free tools
Want a plan built for you?
Answer 10 questions and get a personalized 8-week habit plan. Free, once.