Hydration Calculator
Calculate your recommended daily water intake based on body weight.
Estimated baseline: 2.66 L/day (~11 glasses)
General estimate only; climate, diet, pregnancy, medication, and health conditions can change fluid needs.
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How to Use
- 1Open the Hydration Calculator calculator.
- 2Enter your values into the fields provided.
- 3Your result updates instantly as you type.
- 4Use the result as needed. Tracking tools may keep entries in this browser’s local storage until you reset them or clear site data.
About this tool
Calculate your recommended daily water intake based on body weight. Get instant, accurate results in your browser — no sign-up required.