Holistic Health
Water Intake Calculator
How much water do you actually need? Enter your weight, activity level, and climate to get a personalised daily hydration target — in whatever unit makes sense for you.
Total Fluid Intake — Not Just Plain Water
The daily target from this calculator represents total fluid intake from all sources — water, tea, coffee, juice, and the water content of food. Most people get approximately 20% of their daily fluid from food alone, particularly if their diet includes fruits, vegetables, and cooked grains.
Plain water is the best source for the majority of your intake. But you do not need to hit your daily target with plain water alone — and you should not stress about precise daily totals. Consistent, moderate hydration throughout the day is more important than hitting an exact number.