Water Intake कैलकुलेटर for Hot Weather

In temperatures above 35 degrees C, increase your baseline water intake by 1-2 litres. Outdoor workers in 40-degree heat can lose 1-1.5 litres of sweat per hour. A sedentary 70kg person in moderate heat needs about 3-3.5 litres per day versus 2.5 litres in normal weather.

Total per Day

2,950 ml

In Litres

2.95 L

Glasses (250ml)

12 glasses

Hourly Schedule

Spread 2.95L across 16 waking hours = 184ml/hour

About 1 glass every hour

Componentml/day
Base (35ml × 70kg)2450
Activity add-on+500
Climate add-on+0
Total2950

Base recommendation: 35ml per kg of body weight. Additional needs for exercise and heat. Coffee and tea count but alcohol does not. Spread intake throughout the day — avoid drinking large amounts at once.

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