Google Calendar Hours Calculator by Lakeside Apps

This extension adds up the hours of the timed events in your Google Calendar. A small pill at the bottom of the page shows the total for the dates on screen. The free version has no limit and needs no account. Pro costs $9.99 once, no subscription.

WHAT IT DOES
The toolbar popup shows the total for the range you see, the average per day and every event with its length, grouped by day. All-day entries are not counted. You can skip events you declined and count overlapping time only once, so two calls at the same moment do not add up twice.

HOW IT WORKS
1. Open calendar.google.com in the browser.
2. Look at the pill at the bottom, or click the toolbar icon.
3. Switch to another week and the total follows.

FREE
• The total of the dates you see, without a limit.
• Time per day and the length of each entry.
• Skip declined events and merge overlapping time.
• Decimal (1.5) or clock format (1:30).

PRO ($9.99, LIFETIME)
• A breakdown by event colour or by calendar, with the share of each in percent.
• Keywords from your titles, for example a client or project name.
• Any range: last week, this month or your own start and end date.
• A CSV file with date, start, end, title, group and length.

PRIVACY
The extension reads your schedule only on that one site, through the same export offered under Settings. Everything is calculated on your computer and nothing is uploaded to the developer. Options stay in your browser. The only data sent anywhere is the email you enter to buy or restore Pro, which is checked against the payment.

Not affiliated with or endorsed by Google LLC.
Questions: scanlystudio.support@proton.me