Water Intake Calculator
Water Intake Calculator
Daily water (ml)
2,450 ml
Daily water (L)
2.45 L
Weight
70 kg
How calculations work
This tool multiplies body weight by a guideline value in millilitres per kilogram to estimate daily fluid needs. It is a simple, general heuristic used in public guidance (for example, 30–40 ml per kg). Calculations run locally; no external services are used.
How to interpret results
The output is a general daily target for average conditions. Individual needs vary with activity, climate, pregnancy, and health conditions. Treat this number as a guideline, not a prescription.
Disclaimer
What this calculator does
Provides an estimated daily fluid intake target by multiplying body weight by a chosen guideline (millilitres per kilogram). It outputs a daily target in millilitres and litres for general guidance.
Who should use this calculator
Anyone wanting a quick hydration guideline — athletes, fitness fans, or people planning daily water goals. It is not a replacement for clinical or individualized medical advice.
How this calculator works
Enter your body weight and choose a guideline value in ml/kg (for example 30–40 ml/kg). The tool multiplies weight by the guideline to produce the daily ml target and converts it into litres. All calculations run locally without network calls.
How to interpret your result
The result is a general daily target. Higher activity, heat, or medical conditions increase needs; use the figure as a baseline and adjust for circumstances. Aim to distribute intake across the day rather than consuming the full amount at once.
Example
For a 70 kg person using 35 ml/kg, the daily target ≈ 2450 ml (2.45 L). Adjust guideline values to suit activity and climate.
Limitations & disclaimer
This is an informational guideline and does not account for medical conditions, medication, or significant physical exertion. Consult a healthcare provider for personalised hydration advice.