Utility page
Hydration Calculator
Hydration affects energy, appetite, workouts and routine consistency. Use this calculator to set a realistic daily water target you can actually keep.
Estimate your daily water target
Treat this as a practical starting point, then adjust for sweat loss, caffeine, sodium intake and how your body responds.
Why hydration matters
Low hydration can make energy feel unstable, increase perceived effort and make good habits harder to repeat.
What breaks hydration
Usually not knowledge. It is missing reminders, chaotic days, long work blocks and zero routine around water intake.
How to make it stick
Tie water to anchors you already do, like waking up, meals, workouts and the hour before bed.
FAQ
How much water should I drink each day?
A practical starting point is around 30 to 35 ml per kg of body weight, then adjust for exercise and heat.
Should workouts change my water target?
Yes. Harder or longer sessions usually increase fluid needs, especially in warm conditions.
Is more water always better?
No. The goal is adequate hydration, not extreme intake. Use body size, climate and activity to find a realistic target.