Water Intake Calculator

Estimate how much water you should drink each day based on your body weight, physical activity, and the climate you live in.

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Weight Unit

Weight

Daily Activity (Minutes)

Climate

How It Works

Hydration needs scale with body weight and increase with activity and heat.

Estimate:

Base = weight x 0.033 L
+ 0.35 L per 30 min activity
+ 0.5 L hot / 0.25 L mild

Conversions:

1 cup = 250 ml, 1 bottle = 500 ml.

This is a general guideline. Individual needs vary with health, diet, and environment; it is not medical advice.

Frequently Asked Questions (FAQ)

This Water Intake Calculator uses scientifically validated medical formulas (such as Mifflin-St Jeor, Devine, or U.S. Navy circumference methods).

No. This tool provides general health estimations and is not a substitute for professional medical advice, diagnosis, or treatment.

Yes, 100%. All age, height, weight, and physiological inputs remain strictly in your local browser memory.

Disclaimer Notice

Medical Disclaimer: The results from this Water Intake Calculator are for informational and educational purposes only. They do not constitute clinical medical advice. Always consult a qualified physician or healthcare provider before starting any dietary or exercise regimen.

Water Intake Calculator

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Disclaimer Notice