Enter your daily habits and get a personalised hydration target — plus how dehydrated you probably are right now.
About you
Base water need scales directly with weight
Men typically need ~500ml more per day than women
Older adults have reduced thirst sensation
Activity & climate
Heat and humidity significantly increase fluid loss through sweat
Air conditioning and heating reduce humidity, increasing fluid loss
Diet & drinks today
Plain water, herbal tea, squash
Coffee, black tea, energy drinks
Each unit causes ~100ml extra fluid loss
Fruit, veg and soups contribute significant water intake
Note: thirst is already a sign of mild dehydration
The best real-time hydration indicator. Aim for pale straw colour.
Your hydration today
Daily target
—
personalised to you
Drunk so far
—
today
Still needed
—
to hit target
Likely dehydration symptoms at your level
What's driving your target
Suggested drinking schedule for the rest of today
Spread your remaining intake across the day — drinking little and often is more effective than large amounts at once.
How your factors add up to your daily target