---
title: "Week number extension – Chrome extension stats, history and permissions"
description: "946 users, rated 5.00 by 3 people. Version 1.4.1, updated 2024-04-12. Requests 0 permissions."
url: "https://extensiontracker.com/extension/fclcmbgakeahonjplbpinljmghfgnfog"
---

# Week number extension

Live in the Chrome Web Store.

- Users: 946
- Rating: 5.00 from 3 ratings
- Last checked: 2026-09-27 00:55 UTC
- Users gained in 7 days: – (needs a week of history)
- Users gained in 30 days: – (needs a month of history)
- Rank by users: #25,253 of 264,703 live extensions
- Rank in Workflow & Planning: #6,823 of 44,474

## The listing

What the Chrome Web Store shows, as of the last check.

Summary from the listing:

> Do you find people who just have to use week numbers annoying? Week number extension is your tool for understanding their language.

- Extension ID: `fclcmbgakeahonjplbpinljmghfgnfog`
- Developer: [Simen Eilevstjønn](https://extensiontracker.com/developer/ub7312c3209431d375f4352b5651229db)
- Category: [Productivity › Workflow & Planning](https://extensiontracker.com/category/productivity/workflow)
- First published: 2020-02-09
- Last updated: 2024-04-12
- Version: `1.4.1`
- Size: 91.07 KiB
- Minimum Chrome: 88
- Languages (1): English (United Kingdom)
- Chrome Web Store: <https://chromewebstore.google.com/detail/week-number-extension/fclcmbgakeahonjplbpinljmghfgnfog>
- View the code or download the CRX, in CRX Viewer: <https://robwu.nl/crxviewer/?crx=https%3A%2F%2Fchromewebstore.google.com%2Fdetail%2Ffclcmbgakeahonjplbpinljmghfgnfog>

## Users over time

One row per check, newest first, as shown on the Chrome Web Store.

| Checked | Users | Rating | Ratings |
| --- | ---: | ---: | ---: |
| 2026-09-27 | 946 | 5.00 | 3 |

## What changed

Every change found on a check, newest first.

No changes found since tracking began on 2026-09-27.

## What it can access

From the extension's manifest, in plain language.

It asks for no permissions.

## About this data

Collected from the extension's public Chrome Web Store listing. It's checked every month, and again whenever a new version appears. Last checked 2026-09-27 00:55 UTC; next check around 2026-10-20.

How the data is collected: <https://extensiontracker.com/methodology>.

## Cite this page

Extension Tracker. “Week number extension” (fclcmbgakeahonjplbpinljmghfgnfog). Chrome Web Store data, last checked 2026-09-27. https://extensiontracker.com/extension/fclcmbgakeahonjplbpinljmghfgnfog. Accessed 2026-09-28.

```bibtex
@misc{extensiontracker_fclcmbgakeahonjplbpinljmghfgnfog,
  title   = {Week number extension (fclcmbgakeahonjplbpinljmghfgnfog)},
  author  = {{Extension Tracker}},
  year    = {2026},
  note    = {Chrome Web Store data, last checked 2026-09-27},
  url     = {https://extensiontracker.com/extension/fclcmbgakeahonjplbpinljmghfgnfog},
  urldate = {2026-09-28}
}
```

---

From Extension Tracker, a public record of the Chrome Web Store: <https://extensiontracker.com/extension/fclcmbgakeahonjplbpinljmghfgnfog>. It isn't affiliated with Google. The data is free to reuse under CC BY 4.0 (<https://creativecommons.org/licenses/by/4.0/>), crediting Extension Tracker. Extension, developer and list pages come as Markdown too: add `format=md` to the address, as in `https://extensiontracker.com/extension/{id}?format=md`.