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Percentage Calculator

Chrome extension by Mark Shreve · Productivity · Tools

A Chrome extension in Productivity · Tools with 11 users, barely installed. Audience over the last 30 days: unchanged.

No site access is declared in the manifest, so it cannot read the pages you open on its own.

What the developer says, and 2 screenshots

Loading from the Chrome Web Store. Open the listing if it does not appear.

Users
11
Rating
not rated yet
Users, last 30 days
Unchanged
Version
1.4
Updated in the store
2025-01-06
Published
2025-01-06
Manifest
V3
Browser access
1 permission

How it has moved

Users
unchanged since 01.10
10-13 · 10 readings
  1. 2026-10-0412
  2. 2026-10-0913
  3. 2026-10-1011
  4. 2026-10-1110
  5. 2026-10-1811
  6. 2026-10-1910
  7. 2026-10-2111
  8. 2026-10-2210
  9. 2026-10-3011
  10. 2026-10-3111
Users
-1 since 31.08
10-13 · 22 readings
  1. 2026-08-3112
  2. 2026-09-0213
  3. 2026-09-0412
  4. 2026-09-0613
  5. 2026-09-0711
  6. 2026-09-0912
  7. 2026-09-1513
  8. 2026-09-1711
  9. 2026-09-2012
  10. 2026-09-2111
  11. 2026-09-2612
  12. 2026-09-2811
  13. 2026-10-0412
  14. 2026-10-0913
  15. 2026-10-1011
  16. 2026-10-1110
  17. 2026-10-1811
  18. 2026-10-1910
  19. 2026-10-2111
  20. 2026-10-2210
  21. 2026-10-3011
  22. 2026-10-3111

A dot marks a day the store showed a different number. Between them the line carries the last one forward: we read every listing up to 2 times a day and record a point only when something moves. History beyond ninety days is in the app.

What it can reach

No site access is declared in the manifest, so it cannot read the pages you open on its own.

  • Store data in your browser storage

The full permission history for this extension

What changed recently

Nothing has moved on this listing since we started watching it.

The publisher

Mark Shreve publishes 2 listings we track, 14 users between them.

  1. Running Pace Calculator Mark Shreve · Productivity · Tools · published 2025-02-12 3 users

Like this one

Listings the catalog judges closest in what they say they do.

  1. Percentage Calculator Extension Describes nearly the same job, smaller audience 5 users
  2. Calculadora de Porcentagem Describes nearly the same job, smaller audience 246 users
  3. Percentages Helper Describes nearly the same job, smaller audience 10 users
  4. Percents Describes nearly the same job, smaller audience 9 users
  5. Percentage Calculator | Basic Describes nearly the same job, smaller audience 83 users ★ 5.0

The top 5 only. The full comparison, with why each one is close, is on the alternatives page; ranking a whole neighbourhood by your own criteria is in the app.

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Users and rating on Ext Ops Panel

Markdown

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HTML

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Figures come from our own regular passes over the public Chrome Web Store listing, last read on . The store last changed these figures on 2026-10-30. We publish no contact details for extension developers.

Where the data comes from: how the catalog is built