Water Intake Calculator
Calculate recommended daily water intake by weight and activity
Water Intake Calculator
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Recommended water (ml)0.00
- Recommended water (liters)
- 0.00
- Glasses (250 ml each)
- 0.00
Results are estimates only
Formula
Water (ml) = weight(kg) × 33 × activity factor + hot climate bonus
Data as of
Results are estimates only
FAQ
The base formula is weight (kg) × 33 ml, adjusted for activity and climate. For example, 60 kg ≈ 2 liters/day for sedentary individuals.
In hot climates (such as Thailand in summer), the tool increases the recommendation by about 10–20% to compensate for sweat loss.