Hydration Calculator

Free hydration calculator to calculate daily water intake target. Instant results in your browser — no signup.

JavaScript is required for live calculation.

You can still read how Hydration Calculator works, the formula, examples, and FAQs below.

Weight
Activity
Climate

Goal planner

Inputs

Weight

Activity

Climate

Results update when you click Calculate.

Water (L/day)

2.31

(weight) * 0.033

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Recently used

Tools you open will show up here on this device — with your last inputs when available.

What this result means

Free hydration calculator to calculate daily water intake target. Instant results in your browser — no signup. Calculate daily water intake target: (weight) * 0.033.

Assumptions

Rule dependency: Universal formula.

How it works

Calculate daily water intake target: (weight) * 0.033.

Example

Example: “water intake calculator”. Enter your values and click the button to get a result.

Frequently asked questions

What does this daily water intake target calculator do?+

It helps you calculate daily water intake target. Typical search: “water intake calculator”.

How should I read the result?+

Calculate daily water intake target using weight; activity; climate. Result: daily water target.