YOUR FAMILY’S INFORMATION

Private by default.

The calculator works in your browser. Entered dates, sex and measurements are not sent to an application server. There is no account or cloud storage. You can download a private local backup file and restore it in another browser.

What is saved?

Only clicking “Save measurement” stores the birth date, sex, dates and measurements in this browser’s local storage. Anyone using the same browser profile may be able to view them. Only one child profile is supported at a time.

Removing your information

Delete individual measurements from the history table. Clearing this site’s browser data removes the profile and all measurements. Browser data removal cannot be undone unless you previously downloaded a backup file. Use “Backup file” before clearing data, then “Restore backup” on the new browser or device. Exported CSV and printed summaries are separate readable copies and cannot be restored.

Site traffic

No third-party analytics or advertising tags are active in this release. The hosting service may process technical request information to serve and protect the site. Calculator event hooks expose only action names, never birth dates or measurements, and currently have no remote collector.

External sources

Links to WHO and CDC open external websites with their own privacy policies. No entered measurements are attached to those links.

Review status: Maintained by Baby Growth and technically reviewed on 29 September 2026. Calculations and product ranges are checked against the cited WHO, CDC and manufacturer sources. This independent tool has not received clinical review and does not replace professional care.