Daily Water Intake Calculator by Weight
Estimate daily water needs from weight, activity level and climate with liters and glasses
Your Details
Daily Goal
Recommended Daily Intake
3.06 L
3,060 ml ≈ 12 glasses (250 ml)
Milliliters
3,060 ml
Glasses
12
About this Tool
Water needs scale with body size, sweat loss and weather. This calculator starts from ~33 ml per kg of body weight, then adds extra for activity level and climate — giving your daily target in liters, milliliters and standard 250 ml glasses.
Common Use Cases
Fitness Training
Raise intake on workout days to replace sweat and protect performance.
Hot Weather
Adjust upward in summer or humid climates where fluid loss spikes.
Desk Workers
Set a concrete daily target instead of guessing from thirst alone.
Weight Management
Track water alongside diet — good hydration supports appetite control.
Pro Tips
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Spread It Out
Sip steadily through the day; chugging liters at once is less effective.
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Check Urine Color
Pale yellow means you're on track; dark yellow means drink more.
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Eat Your Water
Fruits, vegetables and soups count toward daily fluid intake.
FAQs
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