Microsoft Teams File Size Limit: Max Upload (2026)
Microsoft Teams lets you upload files up to 250 GB each. That’s because Teams doesn’t actually store your files — it hands them to SharePoint (channel files) or OneDrive (chat files), and the 250 GB cap comes from those services, per Microsoft’s SharePoint limits documentation. The real ceiling you’ll hit isn’t per-file — it’s how much storage your tenant has left.
The Limits at a Glance
File upload
- 250 GB per individual file uploaded to the Teams Files tab, SharePoint libraries, or OneDrive (Microsoft SharePoint limits)
- 250 MB per file attached directly to a list item (Microsoft Lists / SharePoint lists)
- 400 characters max for the full decoded file path including the name
Storage (SharePoint / OneDrive)
- 25 TB maximum per SharePoint site (where channel files live)
- 1 TB + 10 GB per licensed user total SharePoint storage for most organizations
- 30 million files and folders max per document library
The Limit Comes from SharePoint and OneDrive, Not Teams
When you drop a file into a Teams channel, it goes to that team’s SharePoint site. When you share a file in a chat (one-on-one or group), it lands in your OneDrive for Business under a “Microsoft Teams Chat Files” folder, shared only with the people in that conversation. Microsoft confirms both behaviors in its file storage in Teams guide.
That’s why the per-file ceiling is 250 GB — it’s the SharePoint/OneDrive upload limit, not a Teams number. In practice you’ll run into tenant storage first: each SharePoint site tops out at 25 TB, and your whole organization shares a pool of 1 TB plus 10 GB per license. Education tenants and Teams Essentials accounts get smaller allocations.
How to Share Files Bigger Than the Limit
- Check your free space first, not the file size. A single 250 GB file is fine on paper, but it has to fit in your remaining SharePoint or OneDrive quota. Ask your admin how much is left.
- Compress before uploading. A ZIP can shrink large folders dramatically — just note that the auto-generated ZIP when downloading multiple files is capped at 20 GB.
- Share a link instead of attaching. Upload to SharePoint or OneDrive once, then paste the link into chat. No re-upload, no duplicate storage.
- Split very large media files into parts, or use a dedicated transfer service for one-off enormous files outside the Microsoft 365 storage pool.
- Ask your admin to buy more storage. SharePoint storage is expandable in 1 GB increments, so the org-wide cap is rarely a hard wall.
Troubleshooting
What is the maximum file size you can upload to Teams?
250 GB per file, since Teams stores uploads in SharePoint or OneDrive, which both allow up to 250 GB per file.
Why can’t I upload my file even though it’s under 250 GB?
You’ve likely run out of SharePoint or OneDrive storage, or your admin set a lower limit by policy. The 250 GB is a ceiling, not a guarantee — your tenant’s remaining quota is the real constraint.
Where do files I share in a Teams chat actually go?
Into your OneDrive for Business, in a “Microsoft Teams Chat Files” folder. Channel files instead go to the team’s SharePoint site.
Is there a limit on how many files I can upload?
A SharePoint document library holds up to 30 million files and folders. For sync performance, Microsoft recommends keeping any single library under 300,000 synced files.
Quick Reference
| Item | Limit |
|---|---|
| Max file size (chat or channel) | 250 GB |
| File attached to a list item | 250 MB |
| Max SharePoint site storage | 25 TB |
| Org-wide SharePoint storage | 1 TB + 10 GB per license |
| Files per document library | 30 million |
| Full file path length | 400 characters |
If juggling files, folders, and SharePoint links across Teams is eating your day, an AI assistant can shoulder it. Carly works in your inbox and calendar — filing attachments, sharing links, and following up — and connects to Microsoft Teams. It starts at $35/month and is built to do these tasks reliably, every time.
Related guides: How to Share a File in Teams · Teams Meeting Limits · Slack vs Teams
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