You can check how much Dataverse storage you have in the Power Platform admin center. This is the primary location for managing environments, capacity, and other settings for Power Apps, Power Automate, and Power Pages.
Checking Storage Capacity
Sign in to the Power Platform admin center.
In the navigation pane, select Resources, then Capacity, and then the Summary tab.
The Summary tab gives you an overview of your organization's storage usage across different types: database, file, and log.
File storage, which is where user-uploaded files are stored, is separate from database and log storage. Power Pages has its own default capacity entitlements, and additional capacity can be purchased if needed.
If you have multiple environments, you can click on the Dataverse tab to see a detailed breakdown of storage consumption by each environment and even by individual tables within those environments. This helps you identify which tables are using the most space. You can also download this information as a CSV file for further analysis.