Water Intake Calculator
Find out how much water you should drink daily based on your weight.
Input Values
kg
Results
Enter values to see results.
⚠️ Results are indicative only. Consult a qualified professional before making any decisions.
What is this Calculator?
The Water Intake Calculator estimates your daily water requirement based on your body weight and physical activity level. Adequate hydration is essential for digestion, temperature regulation, joint lubrication, and overall health.
How to Use
1
Enter Weight: Enter your body weight in kilograms.
2
Select Activity Level: Choose Sedentary, Light, Moderate, or Active.
3
View Results: See your recommended daily water intake in ml, glasses, and litres.
Frequently Asked Questions
The general recommendation is 2–3 litres per day for adults. Our calculator uses 30–45 ml per kg of body weight depending on activity level, which is a widely used clinical guideline.
Yes, all fluids (including tea, coffee, juice, and soup) contribute to your daily fluid intake. However, caffeinated drinks have a mild diuretic effect, so plain water remains the best choice.
Yes. In hot and humid climates (like most of India), you sweat more and need more water. Add 500ml–1 litre on hot days or when spending time outdoors.
Dark yellow urine, dry mouth, headache, fatigue, dizziness, and reduced urine frequency are signs of dehydration. Mild dehydration can affect concentration and physical performance.
Yes — overhydration (hyponatremia) can occur if you drink excessive water (typically >4–5 litres rapidly), diluting sodium levels. This is rare and mainly seen in endurance athletes.
Yes. Fruits like watermelon, cucumber, and oranges are 90%+ water content. Eating water-rich foods can contribute 20–30% of your daily fluid intake.