Water Intake Calculator
Estimate how much water to drink daily based on your weight and exercise.
Recommended water intake
2.80 L
In cups (US)
11.8
Comment ça marche
Uses a base of 35 mL of water per kg of body weight, plus an extra 350 mL for every 30 minutes of daily exercise.
Does climate or health conditions matter?
Yes — hot weather, illness, and pregnancy all increase needs. This is a general baseline, not medical advice.