The simplest way to estimate your daily water need is from your body weight — roughly 30–35 ml per kg, adjusted for how active you are and how hot it is. Enter your weight, activity and climate to get your target in litres. Heavier and more active people need more; hot Indian summers push the number up further.
Enter your weight and preferences, then click Calculate
A nutritionist can turn this number into an eating plan that fits your day.
