GradeBac - ManageBac Grade Calculator

by GradeBac · Education

Manifest V3 Free

View in Chrome Web Store Data as of 15 Oct 2026

Automatically calculates final grades on ManageBac and predicts future grades.

Users

1,000

0 in 30 days

Rating

4.4 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#28K

#23K among extensions

Version

2.1

updated 3 Jun 2026

Users

monthly, 13 months

Latest, 15 Oct 2026: 1,000 usersMove the mouse over the chart for any month

Ratings count

monthly, 13 months

Latest, 15 Oct 2026: 5 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 GradeBac - ManageBac Grade Calculator

Your grades, instantly, clearly. GradeBac brings real-time grade calculation directly into ManageBac, so you can see where you stand without refreshing, saving, or guessing. It automatically calculates your course grade using ManageBac’s weighted category system, including tests, quizzes, homework, projects, and more. As new scores are added, GradeBac updates your grade instantly. Simple. Accurate. Always there when you need it. Built for students who want a clearer view of their progress: right inside their school portal.

Growth

Window	Users	Change	Rating
7 days	0	+0.0%	0.00
30 days	0	+0.0%	0.00
6 months	0	+0.0%	0.00
1 year	+861	+619.4%	−0.60

Chrome Web Store search rankings

Where GradeBac - ManageBac Grade Calculator appears when people search the store, with the 30 day change

Search phrase	Position	30 days
calculator	#93	−38

Version history

5 versions recorded

2.13 Jun 2026

2.026 Oct 2025

1.625 Sep 2025

1.519 Sep 2025

1.318 Sep 2025

Details

Category: Education
First seen: 18 Sep 2025
Size: 1006 KB
Languages: en
Pricing: Free
Privacy policy: kevinwk.notion.site
Extension ID: abojieelcphbbhebcibbekangkmdbhnd

Permissions and risk

Moderate riskimpact 3, likelihood 2

Permissions

storage

Site access

*://*.managebac.com/**://*.managebac.cn/**://*.managebac.us/**://*.managebac.uk/**://*.managebac.de/**://*.managebac.fr/**://*.managebac.jp/**://*.managebac.ca/**://*.managebac.au/**://*.managebac.it/*and 85 more