Calculadora Agua Diaria

Hydration is one of the most underestimated pillars of human health, yet most people have no idea how much water they actually need. The old advice to "drink eight glasses a day" is a blunt oversimplification that ignores body weight, activity level, climate and individual physiology. Our daily water intake calculator uses a weight-based formula adjusted for activity level, providing a far more personalised — and physiologically accurate — recommendation than any blanket rule ever could.

Water intake is intimately connected to overall body composition and weight management. Proper hydration boosts metabolic rate, reduces false hunger signals and supports kidney function. If you are on a health journey, we strongly recommend also using our BMI Calculator and Calorie Calculator to build a complete, data-driven picture of your nutritional needs.

⚕️ Please note: The figure provided is a scientifically-based general estimate. Individual hydration needs can vary significantly based on health conditions, medications and climate. If you have kidney, heart or other chronic conditions, please consult your doctor or a qualified healthcare professional for personalised advice.

¿Cuánta agua se debe beber al día?

La fórmula general es 30–35 ml de agua por kilogramo de peso corporal al día. Una persona de 70 kg necesita aproximadamente 2,1–2,5 litros diarios en condiciones normales. La actividad física aumenta esta cantidad en ~500 ml por hora de ejercicio moderado.

¿Qué ocurre si no bebemos suficiente agua?

Una deshidratación leve del 1–2% ya deteriora el rendimiento cognitivo y la resistencia física. La deshidratación crónica aumenta el riesgo de cálculos renales e infecciones urinarias. ⚕️ Consulte a su médico si tiene condiciones médicas que afecten la ingesta de líquidos.