Privacy notice
Last updated: 6 September 2026
Check My BMI is operated by Lumielle Group Ltd, the controller responsible for personal information processed in operating this website. Our company number is 17202798; we are registered in England and Wales.
Your calculator measurements
You do not need an account. You enter your height and weight into the page, and your BMI is calculated in your browser. Check My BMI does not intentionally send these measurements to Lumielle Group Ltd or store them in cookies or browser storage.
Cookies, advertising and tracking
The current website has no advertising, analytics, behavioural tracking or affiliate tracking. We do not profile users or sell their data. The website code does not set cookies or use browser storage.
Hosting and technical information
The website is hosted on Cloudflare Pages. Cloudflare may process normal technical web-request and security information, such as your IP address, requested URL, browser information and request time, to deliver and protect the website. This is separate from the measurements you enter into the calculator. See Cloudflare’s privacy policy for information about its processing.
Contact emails
Contact emails are handled through Google Workspace. If you email us, your email address and the information you choose to include are processed to receive and respond to your message. Please avoid sending health information with a general website enquiry.
Your rights and how to contact us
Depending on the circumstances, you can ask to access, correct or delete your personal information, restrict or object to its use, or receive a portable copy. These rights do not apply in every case.
To contact us, raise a privacy concern or exercise your rights, email hello@checkmybmi.co.uk or write to: Lumielle Group Ltd, 4 Cornfield Terrace, Eastbourne, East Sussex, United Kingdom, BN21 4NN.
You can also complain to the UK Information Commissioner’s Office (ICO) if you are unhappy with how your information is handled. Read more about your data-protection rights on the ICO website.
Other websites and changes
Links to the NHS, ICO and other websites take you to services with their own privacy notices. We will update this notice if the way this website handles information changes.