// FREE TOOL · FROM VIVE
How much water you actually need.
Personalised by body size, training, climate, and lifestyle — not the 8-glasses myth.
DAILY WATER
3.6 L
GLASSES (250 ML)
14
PER HOUR AWAKE
223 ml
Across 16 waking hours
// FAQ
Good to know
Is 8 glasses a day actually the rule?+
That figure is a rough rule of thumb, not a clinical standard — actual needs vary a lot with body size, activity, climate, and diet, which is why we personalise it above.
Do caffeine and alcohol really dehydrate you?+
Both have a mild diuretic effect, so we add a small amount back to your target to compensate — moderate intake is fine for most people.
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