0
liters/day
0 cups (250 ml)
Spread it across the day. In heat or during workouts, drink more.
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How it's calculated
The general guideline is ~33 ml of water per kg of body weight, plus about 0.3-0.7 L based on activity level (to replace fluid lost through sweat). On hot days or intense training you need more.
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Frequently asked questions
How much water should I drink per day?
About 33 ml per kg of body weight โ for a 70 kg person that's roughly 2.3 L, plus more for activity. The calculator gives your exact amount.
Do coffee and tea count?
They contribute to fluids, but water is best. Sugary drinks aren't recommended as a replacement.
How do I know if I'm drinking enough?
A good sign is pale urine. Dark urine means drink more.