How IT Administrators Clean Google Calendar at Scale

Managing Google Calendar at the organisational level is a challenge that most IT administrators encounter eventually. Whether it is a post-migration clean-up, an annual refresh, or a response to a specific business event, cleaning calendars across a Workspace organisation requires a systematic approach.

The IT administrator's toolkit

Google Workspace provides IT administrators with several tools for calendar management at the organisational level:

• Google Admin Console: Provides calendar management at the account level — suspending users, transferring calendar ownership — but no event-level bulk operations
• Google Apps Script: Can be scripted to delete events by date range, but requires development expertise and careful testing
• Google Calendar API: The underlying API used by both Google's own tools and third-party applications like WipeAway
• WipeAway: A purpose-built web tool that uses the Google Calendar API to provide a safe, controlled bulk deletion interface without requiring scripting or development

Access management for organisation-wide clean-up

The first challenge for IT administrators is access. To clean a calendar, you need edit access to it. For shared team and resource calendars, this is straightforward. For user-owned calendars, a Workspace super admin can grant themselves access via the Admin Console:

1. Sign in to admin.google.com
2. Go to Directory → Users → select the user
3. Click More → Manage Google Calendar → Share calendar
4. Add your admin account with edit access

Once access is granted, sign into WipeAway with your admin account to clean that user's calendars.

A systematic approach for large-scale clean-up

For organisations cleaning many calendars simultaneously, a batched approach works best:

Batch 1: Shared resource calendars

Meeting rooms, equipment, shared resource calendars. These are typically owned by service accounts or admin accounts and are easy to access. Process these first.

Batch 2: Departmental and team calendars

Shared calendars owned by teams or departments. Access these through the owning account or by granting admin access.

Batch 3: Individual user calendars

If individual user calendars need cleaning (for example, as part of an offboarding process or after a migration), grant access for each user's calendar as needed and process in batches.

Documenting the clean-up

Keep a record of what was cleaned, when, who authorised it, and what cut-off date was used. This is standard IT change management practice and useful if questions arise later about missing calendar data.