Water Intake Calculator
Calculate your recommended daily water intake based on weight and activity.
100% Client-Side
Daily Water Intake
2.8liters
cups
~12(8 oz)
glasses
~11(250 ml)
What is Water Intake Calculator?
A water intake calculator estimates how much water you should drink daily based on your weight, activity level, climate, and other factors. Proper hydration supports energy, digestion, skin health, cognitive function, and physical performance.
How to Use
- Enter your body weight
- Select your activity level (low, moderate, high)
- Indicate any special factors (hot climate, pregnancy, altitude)
- View your recommended daily water intake in ounces and liters
Frequently Asked Questions
- How much water should I drink per day?
- A general guideline is half your body weight (in pounds) in ounces. A 160-pound person would aim for 80 ounces (about 2.4 liters). Active people and those in hot climates need more.
- Does coffee count toward water intake?
- Yes, moderate coffee and tea consumption contributes to hydration despite the mild diuretic effect. Water, herbal teas, and water-rich foods all count toward your daily total.
- What are signs of dehydration?
- Dark yellow urine, thirst, dry mouth, fatigue, headache, and dizziness are common signs. By the time you feel thirsty, you may already be mildly dehydrated.