Free water intake calculator to find your recommended daily hydration based on body weight, activity level, climate, and health goals.
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Proper hydration is essential for health, energy, and performance. Our calculator determines your personalized daily water needs based on your weight, activity level, and climate—because one size doesn't fit all when it comes to hydration.
Your body needs water for virtually every function—from regulating temperature to transporting nutrients. The common '8 glasses a day' advice isn't personalized. Your actual needs depend on body size, physical activity, climate, and other factors. Proper hydration improves energy, cognitive function, and physical performance.
Base Formula
Water (L) = Weight (kg) × 0.033Based on your specific weight and activity.
Considers factors like exercise and climate.
Proper hydration improves energy and focus.
Dehydration significantly reduces performance.
The brain functions better when well hydrated.
Water is essential for healthy digestion.
Hydration improves skin appearance.
Yes, moderate coffee consumption counts toward hydration. While caffeine has a mild diuretic effect, the water in coffee more than compensates. However, water remains the best choice for optimal hydration.