Water Calculator
Calculate your daily water intake based on weight, activity level, and climate.
Published by:
isCalculator Editorial Team
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How to use this tool?
How to Use the Water Intake Calculator
- Enter your weight in the "Weight" field. You can use kilograms (kg) or pounds (lbs) — select your preferred unit from the dropdown.
- Choose your activity level from the dropdown (e.g., Sedentary, Lightly active, etc.). This adds 0.35 L per level.
- Select your climate — "Cool / Temperate" or "Hot / Humid". Hot climate adds 0.5 L.
- Click "Calculate Water Intake" to see your recommended daily water intake in liters.
- Interpret the result: The displayed value is your total daily water intake (including all adjustments). The formula used is shown below the result for transparency.
Tip: Use a decimal point for precise weight (e.g., 70.5 kg). The calculator automatically converts lbs to kg.
Previous Results
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Frequently Asked Questions
We use a formula: base intake = weight (kg) * 0.033 liters. Then we add activity adjustments (0 to 1.4 L) and climate adjustment (0.5 L for hot climates).
The calculator automatically converts pounds to kilograms (1 lb = 0.453592 kg) for the formula.
This is a general guideline. Individual needs may vary based on health conditions, pregnancy, or breastfeeding. Consult a doctor for personalized advice.
