Water Intake Calculator
How Much Water Should You Drink?
Water is essential for life, yet most people don't drink enough of it. CalculatorBud’s **Daily Water Intake Calculator** helps you determine exactly how much hydration your body needs based on your weight and activity level.
While the old "8 glasses a day" rule is a good start, it doesn't account for your body size or how much you sweat during exercise. Our tool gives you a personalized target.
Why Hydration Matters
Drinking the right amount of water does more than just quench your thirst. Here are the key benefits:
Dehydration is a leading cause of fatigue. Water keeps your energy steady.
Even mild dehydration can affect concentration and mood.
Drinking water before meals can help you feel full and eat less.
🧪 How We Calculate Your Intake
Our formula is based on modern health recommendations:
- Baseline: We calculate roughly 30-35ml of water for every kg of body weight.
- Activity Factor: We add approximately 350ml to 1000ml of extra water depending on your exercise intensity to replace sweat loss.
Frequently Asked Questions
Yes, partially. While caffeine is a mild diuretic, the water in coffee and tea still contributes to your daily hydration total. However, pure water is always the best source.
Yes, it is possible to overhydrate (a condition called Hyponatremia), though it is rare in healthy adults. It typically happens to endurance athletes who drink massive amounts without replacing electrolytes.
Absolutely! About 20% of your daily water intake comes from food. Fruits and vegetables like watermelon, cucumber, and oranges are excellent sources of hydration.