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Water Intake Calculator

Estimate daily water intake from body weight, movement, and climate with a clear breakdown

kg
Regular light movement with occasional sweating.
Comfortable temperatures without additional heat exposure.

Frequently Asked Questions

Daily Water Intake Guidelines
The National Academies recommends about 3.7 liters (125 oz) per day for men and 2.7 liters (91 oz) per day for women from all beverages and food. About 20% of daily water intake comes from food.
Signs of Dehydration
Dark yellow urine, fatigue, headaches, and reduced cognitive performance are early signs of dehydration. Aim for pale yellow urine as a simple hydration check.