Water Intake Calculator
Estimate daily water intake from body weight, activity, and climate.
This page is an editable estimator with realistic defaults so you can model your own situation in minutes.
Base water is estimated from body weight, then adjusted for exercise minutes and hot climate assumptions.
Treat the result as a planning estimate and verify important numbers with the relevant official source before acting.
| Body weight | 79.4 kg (175 lb) |
|---|
Assumptions
- Fluid needs vary with sweat, sodium, medications, pregnancy, illness, and climate.
- This is not a dehydration or electrolyte medical assessment.
How this calculator works
Formula used
Base water is estimated from body weight, then adjusted for exercise minutes and hot climate assumptions.
Example calculation
Plug in your own numbers and the result updates instantly. Base water is estimated from body weight, then adjusted for exercise minutes and hot climate assumptions.
Water Intake Calculator FAQ
Is this water intake calculator medical advice?
No. It is an educational estimate only and should not be used to diagnose, treat, or make medical, nutrition, legal, or emergency decisions.
Why might my real result be different?
Age, sex, body composition, pregnancy, medications, medical conditions, training status, lab methods, and measurement accuracy can all change real-world results.
Should I check these results with a professional?
Yes. Confirm health, nutrition, fitness, kidney function, alcohol, or safety decisions with a qualified professional or official source.