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Daily Water Intake Calculator

See an illustrative water-intake estimate from weight, activity and heat, not an individual medical requirement. Running the tool requires an account; the free account includes 10 one-time operations on eligible tools.

Weight (kg)

Activity Level

Climate

Water also comes from food and other beverages; population reference values are not fixed individual requirements. National Academies: Dietary Reference Intakes for Water.

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About Daily Water Intake Calculator

See an illustrative water-intake estimate from weight, activity and heat, not an individual medical requirement

Source and result scope

An illustrative water calculation; population references do not set individual needs. Publisher: Zayenha Tools. We checked the published source on 28 September 2026; no individual professional review of this result is claimed. National Academies.

Frequently Asked Questions

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You can preview the tool without an account. Running it requires an account; the free account includes 10 one-time operations, with plans for ongoing use.

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The site adapts to mobile and desktop screens, but some functions depend on browser and device support.