Charles' Calculator icon

Charles' Calculator

by pennington63@gmail.com · Tools
Manifest V3 Free
View in Chrome Web Store Data as of 21 Oct 2026

Quick, in-popup calculator—using math.js for correct order-of-operations.

Users
16
+4 in 30 days
Rating
5.0 / 5
unchanged in 30 days
Ratings
1
0 in 30 days
Store rank
#167K
#140K among extensions
Version
1.0.0
updated 5 Jul 2025

Users

monthly, 16 months
0816Jul 2025Mar 2026Oct 2026
Latest, 21 Oct 2026: 16 usersMove the mouse over the chart for any month

Ratings count

monthly, 16 months
001Jul 2025Mar 2026Oct 2026
Latest, 21 Oct 2026: 1 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 Charles' Calculator

Charles' EZ calculator -- angles measured in radians, does things correctly, I think.

Growth

WindowUsersChangeRatingsRating
7 days+2+14.3%00.00
30 days+4+33.3%00.00
6 months+5+45.5%00.00
1 year+16–+1+5.00

Version history

1 versions recorded
1.0.05 Jul 2025

Details

Category
Tools
First seen
5 Jul 2025
Size
303 KB
Languages
en
Pricing
Free
Extension ID
ooofhcgmofkclefgppgafkoebenphgpb

Permissions and risk

Minimal riskimpact 0, likelihood 1

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