Here is a general list of limits within Teams, full details can be found on the Microsoft Teams support documentation.
Teams and Channels
| Feature | Maximum limit |
|---|---|
| Number of teams a user can create | 250 |
| Number of teams a user can be a member of | 1,000 |
| Number of members in a team | 10,000 |
| Number of owners per team | 100 |
| Number of org-wide teams allowed in a tenant | 5 |
| Number of channels per team | 200 (includes deleted channels) |
| Number of Private channels per team | 30 |
| Number of members in a Private channel | 250 |
Chat
| Feature | Maximum limit |
|---|---|
| Number of people in a private chat1 | 250 |
| Number of people in a video or audio call from chat | 20 |
| Number of file attachments2 | 10 |
Meetings and Calls
| Feature | Maximum limit |
|---|---|
| Number of people in a meeting (can chat and call in) | 300 |
| Number of people in a video or audio call from chat | 20 |
| Max PowerPoint File Size | 2GB |
| Teams keeps meeting recordings that don't get uploaded to Microsoft Stream, available for local download | 20 days |