Several hundred million people could opt for Microsoft’s free upgrade offer during the first year of Windows 10’s availability, and many are probably wondering which version of Windows 10 they’ll get. Well, wonder no more!

Windows 7

Windows 7 Starter will be upgraded to Windows 10 Home

Windows 7 Home Basic will be upgraded to Windows 10 Home

Windows 7 Home Premium will be upgraded to Windows 10 Home

Windows 7 Professional will be upgraded to Windows 10 Pro

Windows 7 Ultimate will be upgraded to Windows 10 Pro

Windows 8

Windows 8.1 will be upgraded to Windows 10 Home

Windows 8.1 with Bing will be upgraded to Windows 10 Home

Windows 8.1 Pro will be upgraded to Windows 10 Pro

Windows Phone

Windows Phone 8.1 will be upgraded to Windows 10 Mobile. The availability of the upgrade may vary by hardware maker, mobile operator or carrier.

Excluded editions

Windows 7 Enterprise, Windows 8, Windows 8.1 Enterprise, and Windows RT/RT 8.1 are excluded from the free upgrade offer.