1. Base Storage

• Every Microsoft 365 tenant gets 1 TB (1,024 GB) of SharePoint Online storage by default.

2. Additional Storage

• You receive an additional 10 GB of SharePoint storage for each licensed user (with eligible plans).

Total SharePoint Storage Formula:

Example Calculation

If your organization has 50 licensed Microsoft 365 users:

How to Check Actual Storage Usage

You can view your current SharePoint storage in the Microsoft 365 Admin Center:

Steps:

1. Go to Microsoft 365 Admin Center.

2. Navigate to Reports > Usage.

3. Click SharePoint site usage.

4. Or go to SharePoint Admin Center > Active sites.

5. At the top, you’ll see total storage used vs available.

Alternatively:

1. Go to https://admin.microsoft.com

2. Navigate to SharePoint Admin Center > Settings > Storage Limit.

Notes:

• Only certain Microsoft 365 licenses (e.g., Business Standard, E3, E5) contribute to storage allocation.
• Add-on storage can be purchased if you exceed the included limit.
• Storage includes all site collections, OneDrive, Teams files, and document libraries.