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HydrationTool

8 Glasses a Day? The Truth About Water Intake

Calculate your exact daily water needs using our WHO-verified calculator.

D
DietLog Medical Team
Scientifically Verified Data

The "8 glasses of water a day" rule is a myth. Water requirements vary wildly based on your body weight, physical activity, and local climate. Drinking too little impairs fat loss and cognitive function, while drinking too much can lead to hyponatremia.

Use the calculator below to find your specific hydration target based on authentic World Health Organization (WHO) physiological guidelines.

Hydration Calculator
Find your exact daily water requirement
Your Daily Requirement
Liters
Standard Glasses (250ml)

Why hydration impacts weight loss

Your kidneys require sufficient water to function. When dehydrated, the liver has to step in to help the kidneys, which severely limits the liver's ability to metabolize stored fat. Furthermore, thirst is frequently confused with hunger by the brain.

Track your water easily

Knowing your target is step one. Step two is actually hitting it. DietLog includes a free daily water tracker alongside our calorie tracking tools so you can ensure you're always optimized.

Track your daily water & macros

Stop guessing. Use DietLog to track your exact water intake and food calories completely free.

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