Water Intake Calculator
Calculate your daily hydration needs
Sedentary
Office work, little exercise
Light Activity
Exercise 1-2 times/week
Active
Exercise 3-5 times/week
Very Active
Daily intense exercise
2.3 L
Daily Water Intake
8
Glasses (250ml)
78
Ounces
4.6
Bottles (500ml)
9.7
Cups (8oz)
How It Works
- Enter your weight in kilograms or pounds.
- Input your age for more accurate hydration needs.
- Select your activity level from the options provided.
- Click Calculate to see your daily water needs.
- View results in liters, glasses, ounces, bottles, and cups.
Frequently Asked Questions
How much water should I drink daily?
The general recommendation is 2-3 liters (8-12 glasses) for adults. Factors like weight, activity level, climate, and health conditions affect your needs. Our calculator personalizes this based on your inputs.
Does this include water from food?
No, this is your drinking water target. Food typically provides 20% of daily water intake. The calculator shows total fluid needs - aim to drink at least 80% of this amount directly.
Is this calculator free to use?
Yes, ApexSofteck Tools's Water Intake Calculator is completely free. Use it unlimited times to track your hydration without any registration.
What are signs of dehydration?
Common signs include dark urine, thirst, dry mouth, fatigue, headache, and dizziness. Severe dehydration causes rapid heartbeat, confusion, and fainting. Drink water regularly throughout the day to prevent dehydration.
Should I drink more during exercise?
Yes! Add 0.5-1 liter per hour of moderate exercise, and 1-1.5 liters per hour of intense exercise. Drink before, during, and after workouts. The calculator adjusts for activity level but extra may be needed in hot weather.