Water Intake Calculator

Estimates daily water intake needs based on body weight and activity.

Lilu Baba's Water Intake Calculator estimates a daily hydration target using a common weight-based guideline, adjusted for exercise. Informational only, not medical advice.

How to use this calculator

  1. Enter your body weight.
  2. Enter your typical daily exercise time.
  3. Recommended daily water intake updates instantly.
Recommended Daily Water Intake (litres) —

Water Intake Calculator — frequently asked questions

A commonly cited baseline of about 33ml per kg of body weight, with an extra allowance for exercise minutes.

Yes — hot or humid climates increase fluid needs beyond this baseline estimate.