About the Water Intake Calculator
Hydration needs are not one-size-fits-all: they scale with body mass, sweat losses from activity, and climate — which is why a one-line “8 glasses a day” rule fails desert dwellers and office workers alike.
This calculator starts from the widely used weight-based guideline (about 35 ml per kg), adds sweat replacement for exercise, and layers on a climate adjustment — then translates the result into glasses and bottles, the units people actually track. Water is only half of the intake picture, though; the calorie calculator covers the energy side with your BMR and daily calorie needs.