Hydration Calculator
Daily Water Needs
Formula
Base = weight(lbs) / 2 in ounces. Add 12–48 oz for activity level and 8–16 oz for hot/dry climates.
Frequently Asked Questions
How much water should I drink daily?
A common guideline is to drink half your body weight (in pounds) in ounces of water per day, then add more for exercise and hot climates.
Does exercise increase water needs?
Yes. You should drink an additional 12–48 oz of water depending on exercise intensity and duration. For every 30 minutes of exercise, add approximately 12 oz.
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