BC/AD or BCE/CE Era Notation Selector

by Karen Grigorian (he/him) · Accessibility

FeaturedManifest V3 Free

View in Chrome Web Store Data as of 15 Oct 2026

Customize era notations so that they are always BC/AD or always BCE/CE

Users

−7 in 30 days

Rating

5.0 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#96K

#80K among extensions

Version

1.0.3

updated 28 Nov 2025

Users

monthly, 3 years

Latest, 15 Oct 2026: 69 usersMove the mouse over the chart for any month

Ratings count

monthly, 3 years

Latest, 15 Oct 2026: 3 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About BC/AD or BCE/CE Era Notation Selector

Customize era notations on any website. How to use it: 1. Add this extension to the top bar. 2. Make sure that the "Use on this website" checkbox is selected for the website where you want to use this functionality. You have to activate this extension for each website individually. 3. Select BC/AD or BCE/CE. You only need to make this choice once. It will be applied globally to all websites that you selected on the previous step. You can change your choice later if you need to.