Water Intake Calculator
Calculate your recommended daily water intake based on weight and activity
Your Information
Your Recommendation
Daily Water Intake
45 L
1,522 oz
Per Day
190.2 cups
As Bottles (16.9 oz)
90 bottles
Hydration Tips
Drink water throughout the day, not all at once. Thirst is a good indicator
Quick Facts
About 60% of your body weight is water. Dehydration affects energy and cognition
Note
Water needs vary by climate, diet, and health. Adjust intake based on thirst and urine color
How Water Intake Calculator Works
This calculator estimates daily water needs based on body weight and activity level.
- Base calculation: 30 ml per kg of body weight
- Activity level increases water needs by 10-20%
- Hot climates and intense exercise require more water
- Individual needs vary; use this as a starting point
Last updated: February 2026
Water Intake FAQ
Does water from food count?
Yes. About 20% of daily water intake comes from foods like fruits and vegetables.
Can you drink too much water?
Yes, though it's rare. Water intoxication can occur from drinking excessive amounts without electrolytes.
Is all water the same?
Plain water is best. Coffee and tea count, but caffeine is a mild diuretic.
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