CalculatorsHub
Health

Water Intake: Daily Hydration

Calculate daily water needs.

Proper hydration for health and performance.

Guideline

Half body weight (lbs) in oz. 160lbs→80oz≈2.4L.

Increases Need

  • Exercise: +16-24oz per 30min
  • Hot weather: +1-2 cups

Dehydration Signs

Dark urine, headache, fatigue, dizziness.

Frequently Asked Questions

Daily water?
Half body weight (lbs) in oz. 160lbs→80oz.
Coffee count?
Mildly diuretic but still hydrates. Water is best.
Too much water?
Rare but possible. Hyponatremia. Listen to thirst.