Accessibility
Growth signalUnknownHigh-risk permissions
Ancient Date Converter icon

Ancient Date Converter

Convert ancient dates into Historical Calendar dates (aka Holocene Calendar or Human Era) or any other year numbering system.

Users85Current public install base
Rating5.0Store average score
Reviews1Public review volume
Manifest versionV3Extension platform version
7-day growth+4Net users gained this week
7-day growth rate+4.94%Relative weekly velocity
Preview

Ancient Date Converter Media preview

6 assets
Trend

30-day user trend

Review user movement over the last 30 days.

User Growth Over Time

82838484852026年6月11日2026年6月14日2026年6月17日Latest: 85
Rating trend

30-day rating change

Track rating movement over time to see whether quality signals remain stable.

30-day rating change

Start
5.00
Latest
5.00
30-day rating change
0.00
4.904.955.005.055.102026年6月11日2026年6月14日2026年6月17日Latest: 5.00
2026年6月11日2026年6月17日
Growth overview

Daily, weekly, and monthly growth

Compare 1-day, 7-day, and 30-day net growth and growth rate.

1-day growthGrowing
+1+1.19%
7-day growthGrowing
+4+4.94%
30-day growthDeclining
-3-3.41%
Technical snapshot

Version, languages, and crawl freshness

Review publication date, version, supported languages, and crawl timestamps.

Version9.0.2
ManifestV3
Size81.4KiB
Languages1English (United States)
Published
Store updated
Last crawled
English (United States)
Overview

Product summary

Review the store description, core capabilities, and common use cases.

This extension converts ancient dates into Historical Calendar dates on Wikipedia and other websites. The first year of the Historical Calendar is 10,000 BC. Year 2025 AD is year 1,2025 in Historical Calendar, but in most cases you can omit the first digit.

This means you can use Historical Calendar only when dealing with ancient history. Your day-to-day life is not affected, thus no official calendar reform is needed for Historical Calendar to be practical.

Alternatively, you can use any other timeline by picking the starting point yourself.

The extension can potentially detect and convert all BC dates, even those that lack “BC” label. If some date is not being detected you can fix that using tools provided by the extension.

It can also detect and convert dates of the Common era, but only those that have “AD” or “CE” label next to them.

Reviews

Recent review snapshot

Inspect the latest comments and rating distribution.

The Chrome Web Store shows 1 reviews, but only 0 review bodies have synced into ExtScope so far. Showing the synced reviews available right now.

5★
0
4★
0
3★
0
2★
0
1★
0
Related products

Similar and related extensions

Review related products from the Chrome Web Store detail page.