Water Intake Calculator
Weight
Please enter a valid weight.
Unit
kg
lbs
Activity Level
Sedentary (little or no exercise)
Lightly active (1-3 days/week)
Moderately active (3-5 days/week)
Very active (6-7 days/week)
Extra active (very hard exercise)
Climate
Cool / Temperate
Hot / Humid
Calculate Water Intake
Recommended Daily Water Intake
liters
Formula used:
Base intake = weight (kg) * 0.033. Adjustments: Activity adds 0.35L per level (sedentary:0, light:0.35, moderate:0.7, active:1.05, extra:1.4). Hot climate adds 0.5L.