How much water do you really need? This free water intake calculator estimates your daily goal from your weight, exercise, climate and any special situation like pregnancy or breastfeeding. You get the answer in litres, fluid ounces, cups and bottles, plus an easy plan for spreading it across the day.
How to use:
- Enter your weight and choose kg or lb.
- Enter your daily exercise time in minutes.
- Choose your climate and any special situation.
- Click Calculate to see your daily water goal and plan.
FAQs:
Q: How much water should I drink a day?
A: A common guide is about 33 ml per kg of body weight. That is roughly 2.3 litres for a 70 kg (155 lb) person, before exercise and heat.
Q: Does exercise change how much I need?
A: Yes. The calculator adds about 350 ml for every 30 minutes of exercise, and more in hot weather.
Q: Do tea, coffee and food count?
A: Yes. Drinks and water-rich foods like fruit and vegetables all add to your daily intake.
Q: Can you drink too much water?
A: Yes, though it is rare. Spread your drinking through the day. If you have a kidney, heart or other medical condition, follow your doctor’s advice.
