Fitness calculators
Water Intake Calculator
Estimate daily fluid volume from body weight using a simple ml-per-kg rule of thumb.
Estimates only — not medical advice. Formulas are simplified screening tools. Talk to a qualified clinician for health decisions.
Daily water
2450 ml
Liters
2.45 L
How to use
- Enter weight in kilograms.
- Optionally adjust ml per kg (default 35).
- Read the estimated daily intake in ml and liters.
Features
- ml/kg estimate
- Liters conversion
- Adjustable factor
Privacy & how it works
This calculator runs entirely in your browser with JavaScript. Your inputs are not uploaded to ToolsWeb servers for this tool. Privacy Policy · Disclaimer.
FAQ
Is 35 ml/kg right for everyone?expand_more
No. Climate, activity, and health conditions change needs. This is a rough personal estimate.
Is this calculator free?expand_more
Yes. No signup required.
Are my numbers uploaded?expand_more
No. Calculations run in your browser. Inputs are not sent to ToolsWeb servers for this tool.
Is this professional advice?expand_more
No. Results are estimates for general information. See our Disclaimer for health, finance, and related tools.