We read every message. For the fastest help, pick the topic that matches your email so we can route it correctly.
Calculator outputs are estimates, not medical advice. For health decisions, speak with a qualified professional. See also our Privacy Policy and Terms of Service.
We typically respond within a few business days. We do not offer personalised nutrition coaching or medical guidance by email.
What to include
General feedback or bugs: the page URL, what you expected, and what happened (browser/device helps).
Privacy rights (GDPR/CCPA, etc.): describe your request clearly; we may need to verify identity as permitted by law. More detail is in our Privacy Policy.
Accessibility: tell us which page and assistive technology you use so we can reproduce the issue.
Copyright (DMCA): follow the process on our DMCA page so notices are complete.
Calculators & your data
Most calculator inputs are processed in your browser and stored locally on your device. We cannot see your weight, goals, or results. Clearing site data removes that information from your device.