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Daily Water Intake

Estimate your daily water intake free. Enter your weight, activity level and climate to get a personalized hydration target in liters and glasses.

Your details

Your daily target

Enter your details and press Estimate.

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How it works

The estimate starts at 35 milliliters per kilogram of body weight per day, a widely used baseline, then adds extra for your activity level and climate. The result shows your target in liters and in standard 250 ml glasses, with the breakdown so you can see where the number comes from.

Not medical advice

This is a general guideline for healthy adults. Real needs vary with diet, health conditions, medication, pregnancy and extreme heat. About a fifth of daily water typically comes from food. If you have a medical condition, ask your doctor for a personal target.

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Daily Water Intake FAQs

How much water should I drink per day?
A common baseline is 35 ml per kilogram of body weight, plus more for exercise and hot climates. The estimator personalizes this for you.
Does coffee count toward water intake?
Mostly yes. Caffeinated drinks hydrate, though water remains the best choice. Very high caffeine intake can be mildly diuretic.
Can I drink too much water?
Yes, though it is rare. Extremely high intake in a short time can dilute blood sodium. Spread your drinking through the day.
Do I need more water when exercising?
Yes. The estimator adds 350 ml to 1 liter depending on activity level. Long or intense sessions may need even more plus electrolytes.
Is this medical advice?
No. It is a general estimate for healthy adults. Consult a healthcare professional for personal guidance.
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