Best Calendar & scheduling Chrome extensions (2026)
The 20 most-used Calendar & scheduling on the Chrome Web Store, ranked by real store users. Listings rated under 3 stars on 20+ ratings are left out. Google Calendar helpers, booking links, meeting schedulers, time-zone and availability tools.
Top 20 Calendar & scheduling, ranked
- 1
Calendly Browser Extension
Schedule meetings without the hassle. Never get double booked. Calendly works with your calendar to automate appointment scheduling.
≈700K users4.3★ from 153 ratingsUpdated 7 weeks ago5 permissions - 2
Todoist for Chrome: Planner & Calendar
Organize work and life with Todoist for Chrome
≈500K users4.7★ from 51.4K ratingsUpdated 2 months ago10 permissions - 3
Read AI
Boost productivity with Read AI's extension—bring the benefits of connected work AI directly to your meetings and calendar.
≈400K users4.4★ from 30 ratingsUpdated 12 days ago4 permissions - 4
Checker Plus for Google Calendar™
See your next events, get meeting notifications and snooze events without opening the Google Calendar page!
≈300K users4.4★ from 2.1K ratingsUpdated 13 days ago14 permissions - 5
Custom Calendar Background
Adds background images to Google Calendar
≈200K users3.7★ from 148 ratingsUpdated 8 months ago3 permissions - 6
G-calize
On Google Calendar... Sunday, Saturday, Today, and other weekdays, You can select the text color and background color.
≈200K users4.2★ from 218 ratingsUpdated 8 weeks ago3 permissions - 7
GCalPlus
Extra Options for Google Calendar
≈70K users3.8★ from 160 ratingsUpdated 3 months ago9 permissions - 8
Manganum: Sidebar with Gmail and Google Calendar
One-click access to your tools, even Gmail and Google Calendar.
≈50K users4.3★ from 1.2K ratingsUpdated 16 months ago20 permissions - 9
Reminders for Google Calendar™
Send reminders by SMS/Text from your Google Calendar™. Use it for your customers or your own appointments.
≈50K users3.6★ from 55 ratingsUpdated 11 months ago3 permissions - 10
Change Timezone for Google Chrome™
FREE! This extension changes the browser time zone defined by the user.
≈40K users3.9★ from 101 ratingsNot updated for 2+ years1 permissions - 11
Calendar Selector for Google Calendar
Save and restore groups of calendars selected
≈40K users4.5★ from 36 ratingsUpdated 14 months ago2 permissions - 12
Tags for Google Calendar™
A little visual addon that adds special markup to tags and question marks in event names.
≈30K users4.0★ from 85 ratingsNot updated for 2+ years2 permissions - 13
Meeting Scheduler for Gmail™ by cloudHQ
Easy meeting scheduling and meeting invitations directly from your mailbox
≈30K users4.5★ from 111 ratingsUpdated 11 months ago6 permissions - 14
Sidebar for Google Tasks
Access Google Tasks directly in Chrome’s sidebar (side panel)—stay organized without needing Gmail or Google Calendar.
≈30K users4.5★ from 118 ratingsUpdated 5 weeks ago3 permissions - 15
Change Timezone (Time Shift)
Easily change your timezone to a desired value and protect your privacy.
≈20K users3.1★ from 49 ratingsUpdated 8 months ago5 permissions - 16
Worldwide Clock Extension
An extension that groups together clocks from all the time zones that are relevant to you and conveniently shows
≈20K users4.5★ from 13 ratingsNot updated for 3+ years2 permissions - 17
AIS Visa Auto Rescheduler
This extension reschedules US Visa application appointment to an earlier date automatically.
≈10K users4.4★ from 310 ratingsUpdated 4 days ago8 permissions - 18
Google Calendar Quick Duplicate
A simple Chrome Extension to quickly duplicate events on Google Calendar.
≈10K users4.1★ from 119 ratingsNot updated for 2+ yearsNo special permissions - 19
Cal Merge for Google Calendar™
Chrome extension that visually merges the same event on multiple Google Calendars into one event.
≈10K users4.4★ from 25 ratingsUpdated 24 months ago3 permissions - 20
Tab Scheduler with auto open and close
Browser tabs will be open and close automatically at selected time. User can activate/deactive list based on requirement
≈10K users3.8★ from 102 ratingsUpdated 4 months ago9 permissions
Head-to-head comparisons
Calendar & scheduling: questions
What is the most popular Calendar & scheduling Chrome extension?
Calendly Browser Extension is the most used, with ≈700K users and a 4.3-star rating. Todoist for Chrome: Planner & Calendar is next with ≈500K users.
Which Calendar & scheduling extension has the best rating?
Of the listings with 100+ ratings, Todoist for Chrome: Planner & Calendar rates highest: 4.7 out of 5 from 51.4K ratings.
Are these Calendar & scheduling still maintained?
3 of the 20 listed here were updated in the last 30 days. Each card shows how recently it was updated.