Calc Smart
Calculates daily water requirement: Base = weight × 35ml/kg, adjusted by activity multiplier (1.0-1.5) and climate multiplier (1.0-1.2). Shows results in liters, glasses (250ml), bottles (500ml), and hourly intake.

Water Intake Calculator

Find out exactly how much water you need daily based on your weight, activity level, and climate conditions.

4.8
2 uses 100% Free Instant Results

💧 Your Details

kg

Daily Water Intake

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Liters / Day

🥛 Glasses (250ml)

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🍶 Bottles (500ml)

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⏰ Per Hour (16h)

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🏥

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About the Water Intake Calculator

Calculate your daily water intake based on body weight, activity level, and climate. See results in liters, glasses, and bottles. Understanding how this works can significantly improve your financial planning. This tool is designed to provide you with the most accurate and up-to-date calculations required for your specific needs.

The Mathematical Formula

Water (ml) = Weight × 35 × Activity × Climate

How to use this calculator?

1

Enter Weight

Input your body weight in kilograms.

2

Select Activity & Climate

Choose your activity level and climate.

3

View Intake

See daily water need in liters, glasses, and hourly recommendations.

Frequently Asked Questions (FAQs)

Q. How is this calculated?

Base: 35ml per kg of body weight, adjusted for activity (up to 1.5×) and hot climate (up to 1.2×).

Q. Should I drink more in summer?

Yes! Hot and humid weather increases water needs by 10-20%.

Disclaimer: This tool is provided for general utility and informational purposes only. While we strive for accuracy, we make no guarantees regarding the results. Please verify the outputs before using them for any critical applications.

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