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Health & Fitness · 4 calculators

Hydration Calculators

How much water to drink per day, extra water for exercise, bottles per day and hydration progress.

Key hydration formulas

Water Intake≈ 33 ml per kg of body weight + 350 ml per 30 min of exercise
Exercise Water IntakeReplace 1.5 litres per kg of body weight lost
Water Bottles Per DayBottles = daily goal ÷ bottle size
Hydration ProgressGoal reached = Water drunk today (ml) ÷ Daily goal (ml) × 100