How we handle messages
- Response time: We usually review messages within 1-2 business days.
- Corrections: Send source links or details if you think a page, formula note, or reference needs correction.
- Privacy questions: Use this form for data, cookie, or advertising-technology questions.
- Medical questions: We cannot provide personal medical advice or fluid prescriptions.
Send a Message
Fill in the form below and we'll get back to you as soon as possible.
Message
General Feedback
Found a bug? Have a feature idea? Want to suggest a new calculator? We read every message and prioritise based on user demand.
Partnership
Partnerships
Health brands, wellness apps, dietitians, and fitness platforms - reach out to discuss embedding our tools or co-branded content.
Press
Media & Press
Writing about hydration science or wellness tools? We're happy to provide expert commentary, data, or a product quote.
Corrections
Corrections & Editorial Review
Send us broken links, outdated references, unclear disclaimers, or formula concerns. We review correction requests against our Editorial Policy.
Warning
We are not able to provide personal medical advice via this contact form. For health-related questions, please consult a qualified healthcare professional.