Daily Water Intake Calculator

A simple estimate for healthy adults.

About this calculator

This gives a rough fluid target of about 30 mL per kg, plus extra for activity and hot weather. Food and other drinks also contribute. People with kidney, heart or liver disease should follow their doctor's fluid advice.

Results are for information only and are not a diagnosis. Consult a doctor for medical advice.

Frequently asked questions

Do tea and coffee count?

Yes, mostly, along with water-rich foods such as fruit and soups.

How can I tell I am drinking enough?

Pale yellow urine passed regularly is a good sign.

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