Water Intake Calculator by Weight
Daily water recommendation based on weight, exercise and climate.
About the Water Intake Calculator by Weight
Water Intake Calculator estimates how much water you should drink per day based on your body weight, daily exercise minutes and climate. Uses the common 33 ml-per-kg baseline with adjustments for sweat and heat.
How to use
- Enter your weight in kilograms.
- Enter your typical exercise minutes per day.
- Pick your climate (cool, normal, hot) and click Calculate.
Benefits & key features
- Personalised to your body and lifestyle rather than a flat 2-litre rule.
- Accounts for sweat losses during workouts.
- Aids weight-loss efforts by reducing hunger-thirst confusion.
- Pairs naturally with the Calorie Deficit and Protein Intake tools.
Pro tip
Sip throughout the day rather than chugging. Clear-pale urine is a real-world sign of good hydration.