Hydration / Water Intake Calculator
Calculate your recommended daily water and fluid intake targets based on body weight and exercise activity.
Input Parameters
Enter details for calculation.
Fluid Requirement
Expert Tip
Hydration needs increase in hot climates. Drink enough water to keep your urine a light straw-colored yellow.
Calculation Methodology & Details
Formula
Calculates base hydration requirements of 33ml per kg of body weight, adding 350ml for every 30 minutes of sweating.
Important Disclaimer
The calculations provided are for educational and general informational purposes only. They do not replace professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider.
How Daily Water Intake is Calculated
Follow these steps to use this calculator:
Enter Weight
Input your weight in kilograms.
Add Exercise Duration
Include minutes spent sweating to calculate fluid replenishment needs.
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ℹ️ About this Calculation
This dietary and nutrition calculator helps optimize energy intake, macronutrient distribution, and dietary planning based on clinical metabolic guidelines and evidence-based nutrition science.
Variable Glossary
Dietary & Body Metrics
Calorie targets, macro ratios, body weight, activity level, or nutrient quantities consumed.
Metabolic Factors
Basal energy expenditure formulas (Mifflin-St Jeor, Harris-Benedict) and recommended daily allowances (RDA).
How to Calculate Step-by-Step
Step 1
Enter your personal stats, body weight, and physical activity multiplier.
Step 2
Select your health objective (maintenance, weight loss deficit, or muscle gain surplus).
Step 3
Get your tailored daily energy targets, macronutrient split, and nutrition guidelines.