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Know your numbers

Personal Hydration Calculator

Get a daily fluid and electrolyte target tuned to your body weight, activity and the climate you live and train in.

Fasting today? (e.g. Ramadan)
2.6 L target fluid intake / day
1–2 Hydralyte servings / day

A general wellness estimate, not medical advice. Fluid needs change with health conditions, medication and pregnancy — speak to a clinician if in doubt.