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Water Intake Calculator

Estimate your recommended daily water intake from body weight, activity level, and climate.

Priya Venkatesan By Priya Venkatesan
Published Last reviewed 1 min read

Inputs

kg

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

Base intake ≈ 35 ml × body weight (kg), adjusted upward for activity (+500–1000 ml) and hot climates (+500 ml).

In depth

Estimate your recommended daily water intake from body weight, activity level, and climate.