Last updated: March 2, 2026

How Much Water Should You Drink Per Day?

Formula

Adequate hydration supports digestion, temperature regulation, joint lubrication, and nutrient transport. A common guideline is about 33 mL per kg of body weight per day.

Active individuals and those in hot climates need additional water to replace sweat losses. Signs of dehydration include dark urine, fatigue, headaches, and dizziness.

Common use cases:

  • Daily hydration planning
  • Exercise hydration strategy
  • Monitoring adequate fluid intake

Frequently Asked Questions

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