How do I use the Hydration Calculator?
Enter your values in the fields and the result updates instantly as you type.
Hydration Calculator
Calculate daily water intake recommendation based on weight and activity level.
Your body weight in kg
sedentary, light, moderate, active, very_active
Minutes of exercise per day
Results
Base Requirement
2.31 L
Activity Adjustment
0.462 L
Exercise Additional
0.5 L
Total Daily Intake
3.272 L
Glasses (250ml)
13 glasses
Formula: Water (L) = Weight (kg) × 0.033 + Activity Adjustment
Frequently asked questions
What formula does this calculator use?
Water (L) = Weight (kg) × 0.033 + Activity Adjustment
Can I use decimal values?
Yes. Decimal inputs are supported for most calculators. Integer-based tools use rounded integer values where appropriate.
Is this calculator free?
Yes. CalcuNimble calculators are free and optimized for fast everyday use.