Water Intake Calculator
Calculate how much water you should drink daily based on your weight, activity level, and climate.
kg
Daily Water
— L
— glasses × 250ml
Milliliters
Glasses
Ounces
Your Daily Glasses
Hydration Tips
- • Drink a glass first thing in the morning
- • Keep a water bottle at your desk
- • Drink before, during, and after exercise
- • Clear or light yellow urine indicates good hydration
Documentation
Calculation Method
Water needs vary based on body size, activity, and environment. We use a base calculation of 33ml per kg of body weight, then adjust for lifestyle factors.
Why 33ml/kg?
"The European Food Safety Authority recommends 30-35ml per kg for adults."
The Formula
Base = Weight (kg) × 33ml
Adjusted = Base × Activity × Climate
Activity: 1.0 - 1.5×
Climate: 0.95 - 1.2×