Optimal Hydration Tool
Daily Water Intake Calculator
Determine your personalized hydration needs based on body weight and activity level.
Hydration Requirement Breakdown
Daily Water Goal
0.0 Litres
Target Glasses
0 Glasses
Estimated 250ml per glass
Biological & Activity Data
kg
min
Pro Tip: Environmental factors like high humidity or extreme heat can increase your hydration requirement by an additional 500ml to 1L.
How Much Water Should You Drink Daily?
Proper hydration is fundamental to metabolic health, cognitive function, and physical performance. Since the human body is approximately 60% water, maintaining fluid balance is non-negotiable. Our online water intake calculator uses anthropometric data to set a daily hydration goal that supports your lifestyle.
The calculation is based on the biological standard of 35ml per kilogram of body mass, with adjustments for fluid lost during physical exertion.
Recommended: One glass every 90-120 minutes.