A hydration calculator is a tool that estimates the ideal level of hydration in a person. Its calculations are based on the intensity of physical activities, gender, weight, height and age of a person. Its result is an estimate of how much fluid the body requires under the set conditions.
Hydration needs of different individuals vary due to such factors as age, gender, daily liquid intake and fluid loss or sweat rate. The hydration calculator tries to determine a recommended fluid intake guideline that is tailored to individual needs. To get more accurate results, provide correct information about yourself, your daily drinking habits and the intensity of your physical activities.