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Water Intake Calculator for Athletes

Calculate daily water intake for athletes and active people. See hydration needs based on exercise intensity, duration, and sweat rate.

Athletes lose 0.5-2 liters of water per hour through sweat during intense exercise. Proper hydration directly affects performance — even 2% dehydration reduces endurance by 10-20%. This calculator estimates your daily water needs based on training intensity and duration.

Tips for Water Intake for Athletes

1

Drink 16-20 oz (500-600 ml) of water 2-3 hours before exercise, then 7-10 oz every 10-20 minutes during

2

For workouts over 60 minutes, add electrolytes (sodium, potassium) — plain water isn't enough

3

Monitor your urine color: pale yellow means well-hydrated, dark yellow means you need more water

Frequently Asked Questions

How much water should an athlete drink per day?
Athletes typically need 3-5 liters (100-170 oz) per day depending on body size, climate, and training intensity. During heavy training, you may need up to 1 liter per hour of exercise on top of your baseline needs.
Last updated: April 2026

Data sources: Standard mathematical formulas

For informational purposes only. Not financial, medical, or legal advice. Always consult a qualified professional for decisions affecting your finances or health.

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