Estimate how much water you should drink each day.
Enter your weight (20–300 kg).
In kilograms.
How many minutes you exercise on a normal day, and whether it is hot.
See litres and glasses a day.
About 33 ml per kilogram of body weight, plus 350 ml for every 30 minutes of exercise and 500 ml in hot weather.
Yes. Most of your fluid comes from drinks of all kinds and from food. Plain water is the best choice for most of it.
More during illness with fever, vomiting or diarrhoea, in pregnancy and when breast-feeding. Some heart and kidney conditions need less. Ask your doctor. General guidance for adults, not medical advice.
No.