Estimate your daily water intake based on your body weight and activity level.
Water requirements vary from person to person. Body size, physical activity, climate, diet, and other factors can affect how much fluid a person needs.
This calculator uses an approximate starting point of 35 milliliters of water per kilogram of body weight. Additional water is added for higher activity levels and warmer climates.
A person weighing 70 kg would have a basic estimated water intake of approximately 2.45 liters per day before activity and climate adjustments.
This calculator provides a general estimate for informational purposes. Individual hydration needs can vary. People with certain medical conditions or fluid restrictions should follow advice from a qualified healthcare professional.
Explore other free health and fitness calculators for hydration, BMI, metabolism, calories, weight, body composition, nutrition, fitness, and pregnancy.
A Water Intake Calculator estimates how much water you may need to drink each day based on factors such as body weight, physical activity and environmental conditions. It provides a general daily hydration estimate.
Daily water requirements vary from person to person. A common starting point is to estimate water needs according to body weight and then consider additional factors such as exercise and hot weather.
Our calculator provides an approximate estimate to help you understand your daily hydration needs.
Water is essential for many normal body functions. Staying adequately hydrated supports normal temperature regulation, digestion and other everyday physiological processes.
Water requirements can increase during exercise, hot or humid weather and other situations where the body loses more fluid through sweating.
Individual hydration needs can vary, so calculator results should be treated as a general guide rather than an exact requirement.
Daily water needs vary depending on body size, activity level, climate and other factors. Use the calculator above to get a personalized estimate based on the information you enter.
Yes. Physical activity can increase fluid loss through sweating, so people who exercise may need additional fluids.
Hot weather can increase fluid loss through sweating. As a result, hydration needs may be higher in hot or humid conditions.
No. The result is an estimate based on the information entered. Individual water requirements can vary considerably.
Use our free Water Intake Calculator above to estimate your approximate daily water needs.