Base requirement is 33ml per kg of body weight. Multiply by activity factor (1.0-1.4) and climate factor (1.0-1.2). Hot climates like Pakistan require 10-20% more.
Frequently Asked Questions
How much water should I drink per day?+
The general guideline is 8 glasses (2 litres) but this varies by weight, activity, and climate. Use the calculator for personalized results.
Do I drink more water in hot weather?+
Yes, significantly more. In Pakistan's summer heat, you may need 3-4 litres per day, especially with outdoor activity.
Does tea and coffee count as water intake?+
Moderate amounts of tea/coffee contribute to hydration. However, they are mild diuretics, so plain water should be the primary source.