What Is a Daily Water Intake Calculator?
A Daily Water Intake Calculator estimates how much water your body needs each day based on body weight, age, activity level, climate, and dietary water sources.
Water Intake Formula Used
This calculator uses a scientifically accepted formula:
- Base water = Body weight (kg) × 35 ml
- Activity adjustment: +500 to +1000 ml
- Climate adjustment: +300 to +700 ml
- Food water deduction: −150 ml per source
Why Drinking Enough Water Matters
Water is essential for digestion, circulation, temperature regulation, joint lubrication, and toxin removal. Chronic dehydration can lead to fatigue, headaches, and kidney problems.
Water Needs by Climate and Activity
People living in hot climates or performing intense physical activity require significantly more water to replace fluid lost through sweat.
Does Food Count Toward Water Intake?
Yes. Fruits, vegetables, milk, and beverages contribute to daily hydration, which is why this calculator adjusts water needs based on dietary intake.
Limitations
This calculator provides general hydration guidance and should not replace medical advice, especially for individuals with kidney or heart conditions.