Calculate your recommended daily water intake based on your weight, height, age, gender, and activity level.
Estimate daily water intake from weight, height, age, sex, and general activity level. The calculator uses an energy-based estimate and adjusts it with a simple weight rule, so the result is best treated as a planning reference rather than a personalized medical recommendation. Actual fluid needs vary with climate, pregnancy, illness, medication, diet, and exercise.
Good to know: This is a general estimate, not medical advice. People with kidney, heart, or fluid-balance conditions should follow guidance from a qualified healthcare professional.