In Outlook, you can export your contacts into a .pst file to make them portable and easier to move.
For more information about Export contacts from Outlook, click here.
Step 1.Open Outlook and click File.
Step 2: Select Open & Export > Import/Export
Step 3. Select "Export to a file"
Step 4. Click Next
Step 5. Select "Comma Separated Values"
Step 6. Next
Step 7. Select Contacts option under Personal Folders.
Step 8. Click Next.
Step 9. Click Browse and choose both a name and location for the exported file.
Step 10. Click Next.
Step 11. Click Finish.