Using the OneDrive website
Depending on the web browser you use, you can upload files up to 100GB in size. (This limit is per file, not total.)
Note: For transferring large files or lots of files, we recommend adding the files to the OneDrive desktop app rather than using the Upload button on the website.
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On the OneDrive website, sign in with your Microsoft account, and then browse to the location where you want to add the files.
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Select Upload.
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Select the files you want to upload, and then select Open.
Tips:
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You can also drag files from File Explorer or Mac Finder straight to your files on the OneDrive website.
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In the Google Chrome or Microsoft Edge browser, you can also upload folders from the Folder option on the Upload menu, or drag folders to the website.
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Learn ways to organize and find photos in OneDrive.