estimatea1c.com / Privacy
This site is a static reference: it has no accounts, no forms, and it does not ask for or store any personal or health information. Calculator inputs are processed entirely in your browser and never sent to a server.
Nothing directly. The site sets no first-party cookies and runs no first-party analytics. Our hosting provider (Vercel) keeps standard, short-lived server logs (IP address, user agent, requested URL) for security and operations, as virtually all web hosts do.
This site uses Google AdSense to serve ads. Google and its partners may use cookies or similar technologies to show ads based on your visits to this and other websites, and may collect data as described in Google's policy on data from partner sites.
You can opt out of personalized advertising at Google Ads Settings, and learn more at Google's advertising technologies page. Users in regions that require it will be shown a consent message before any advertising cookies are set.
Pages link to SteadyRange and to primary sources (journals, guidelines). Those sites have their own privacy policies.
If this policy changes, the date below will change with it. Questions: via the SteadyRange contact page.
Effective 2026-07-30.
SteadyRange logs your glucose and weight, shows time in range and estimated A1C as they move, and exports a clean PDF for your next appointment. Private by default.
Try SteadyRange →Medical disclaimer. This page is general education, not medical advice, and uses population-average formulas (ADAG) to estimate average glucose. Individual factors — anemia, pregnancy, kidney disease, hemoglobin variants — can shift real values. Do not start, stop, or change any medication based on this page. Always consult a qualified healthcare provider about your results, targets, and treatment.