Water Intake Calculator
Find out how much water you should drink daily.
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Liters
Cups
Bottles (16.9oz)
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Frequently Asked Questions
How much water should I drink daily?
A general rule: half your body weight in ounces. A 170 lb person needs about 85 oz (2.5 liters) daily.
Does coffee count toward water intake?
Yes, moderate caffeine intake contributes to hydration. Coffee and tea are mostly water.
How do I know if I'm dehydrated?
Check urine color — pale yellow is well hydrated. Dark yellow or amber means drink more water.
Should I drink more during exercise?
Yes, drink 7-10 oz every 10-20 minutes during exercise. Weigh yourself before and after to gauge fluid loss.
Can I drink too much water?
Rarely, but yes. Hyponatremia (water intoxication) can occur from extreme overhydration. Stick to recommended amounts.