Water Need by Weight
Get a tailored daily water target for your weight and the climate you live in. Hotter climate, more water.
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Point your phone camera at the code to open this tool.
Get a tailored daily water target for your weight and the climate you live in. Hotter climate, more water.
How to use Water Need by Weight
- Open the toolNo signup and nothing to install; it works as soon as the page loads.
- Set “Weight (kg)”
- Set “Climate”
- Read the resultChange any input and the result is recalculated immediately.
Worked example with the defaults
- DAILY WATER NEED · 10 cups of 250 ml
- 2450 ml
Nothing you enter leaves your device
All of the work happens inside your browser. Whatever you type is never packaged up and sent to a server, and no request this page makes carries it.
That makes it safe for contract amounts, personal details and internal documents you would rather not hand to a third party — close the tab and it is gone.
What this tool does not do
Water Need by Weight only does what a browser can do on its own — it talks to no backend service. So it keeps no history for you and syncs nothing across devices; if you need a record, copy or download the result.
It is also not a substitute for professional judgement. For legal, medical or tax decisions, treat the output as a starting point rather than a final answer.
Frequently Asked Questions
- Does food count?
- Yes, food contributes roughly 20% of daily water in a typical mixed diet. This calculator assumes the rest comes from drinks.