How Much Water Should You Drink?
Staying properly hydrated supports digestion, energy, skin health, and concentration. A common guideline is about 35 ml of water per kilogram of body weight, with more needed if you exercise, live in a hot climate, or are unwell.
This calculator gives a personalised daily target based on your weight and activity level. Remember that water also comes from food and other beverages, so listen to your body and adjust for thirst, weather, and exertion.
Frequently Asked Questions
How much water should I drink a day?
A general guideline is around 35 ml per kg of body weight, increased for exercise and hot weather. The calculator personalises this based on your inputs.
Does tea or coffee count toward water intake?
Yes, most fluids and water-rich foods contribute to hydration, though plain water is the healthiest primary source. Very caffeinated drinks have a mild diuretic effect.