Last updated: May 30, 2026
HydroCalc publishes free hydration tools and educational wellness pages. Our goal is to make general hydration guidance understandable without exaggerating certainty or replacing clinical advice.
Who Writes Our Content
HydroCalc pages are written and maintained by the HydroCalc Editorial Team. We do not use fabricated doctors, hidden sponsored authors, or paid medical endorsements. When a page contains health-adjacent guidance, we explain the limits of that guidance and direct users with medical conditions to qualified professionals.
Source Hierarchy
We prioritize sources in this order:
- Public health agencies and national bodies such as the National Academies, CDC, WHO, and American Academy of Pediatrics.
- Peer-reviewed review papers, consensus statements, and clinical education references.
- Specialist medical organizations when discussing conditions such as hyponatraemia or dehydration risk.
- Commercial wellness sources only when they point back to stronger primary references.
Calculator Methodology
The calculator uses a conservative 33ml/kg baseline and adjusts for activity, climate, altitude, caffeine, pregnancy, breastfeeding, age, and adult fluid-average differences. We present a practical range because hydration needs vary with food, sweat, illness, medications, and individual physiology.
Review Frequency
Core calculator logic, legal pages, and major hydration guides are reviewed at least annually. Pages may be updated sooner when public guidance changes, when users report a problem, or when we discover that a statement needs clearer context.
Corrections Policy
If you find an error, outdated reference, broken link, unclear disclaimer, or calculation issue, contact us through the Contact page. We review correction requests, check the claim against sources, and update the relevant page when a correction is warranted.
Independence and Advertising
HydroCalc is free to use. Advertising may help support hosting and maintenance, but ads do not determine calculator outputs, editorial conclusions, or source selection. We do not sell supplements, paid hydration plans, or medical services.
Medical Limitations
HydroCalc is for general wellness education only. It is not a medical device and does not diagnose, treat, or prevent disease. People with kidney disease, heart failure, liver disease, severe electrolyte disorders, prescribed fluid restrictions, or complex pregnancy concerns should seek personal medical guidance.
How We Handle Uncertainty
Hydration science often depends on context. Public guidance may describe average intake, sports medicine sources may focus on exercise replacement, and clinical sources may focus on disease states. When the evidence is not exact, we avoid presenting a single number as universally correct. We prefer practical ranges, explain assumptions, and state when a person should ask a clinician.
Advertising and Editorial Independence
Advertising may appear on HydroCalc to support hosting and maintenance. Ads do not influence calculator outputs, page conclusions, source hierarchy, or whether a health claim is included. If a page is ever sponsored, that relationship will be disclosed clearly. We do not currently sell hydration supplements, paid plans, or clinical services.
What We Do Not Publish
- Personal medical prescriptions or disease-specific fluid limits.
- Unsupported detox, fat-burning, or miracle hydration claims.
- Anonymous expert quotes with unverifiable credentials.
- Claims that encourage unsafe overhydration or ignoring symptoms.