Water Intake Calculator Calculate your optimal daily water requirement based on weight and activity level. Weight (kg) Daily Exercise (Minutes) Weather / Climate Condition Moderate / Normal Climate Hot / Summer Season (+0.5 L) Cold / Winter Season (-0.2 L) Calculate Water Intake Calculating Hydration Needs… 0% Daily Water Target — Liters Glasses per Day (250ml) — Glasses Fluid Ounces (fl oz) — fl oz 5/5 - (1vote)