Water Intake Calculator: How Much Water to Drink a Day

A daily water target based on your weight, how much you exercise and whether you live somewhere hot.

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How to use the water intake calculator

  1. Type your numbers in the boxes (pick your currency or units if asked).
  2. The answer updates as you type: no button to press.
  3. Copy the result, or share it on WhatsApp with one tap.

Questions

Do tea, milk and fruit count?

Yes, all drinks and watery foods count towards it. Thirst and pale-yellow urine are good everyday guides.

Is my data private?

Yes. Everything happens inside your own browser: nothing you type or choose is uploaded to us or anyone else.

Is it free?

Completely free, with no sign-up, no watermark and no limit on how many times you use it. Light ads keep the site running.