SQLCMD results to Excel

I am using SQLCMD command in powershell to run SQL scripts. When i pipe the output to TXT ,the formatting is all messed up. i want to export the results to excel file. how can i do that.

My command Sqlcmd -Q 'select top 10 * from people' -S serverName -d testDB -o c:\output.txt | format-table

Thanks in advance.

via Chebli Mohamed