If you are already a user of genuine Windows 7 or Windows 8.1, you can upgrade to Windows 10 for free for the first year the OS's availability on the market.

You may also purchase a copy of Windows 10 if you decide not to upgrade, or if you need to purchase a copy for other reasons like installing Windows 10 on a PC you built yourself. The estimated retail prices for Windows 10 are the same as Windows 8.1. Windows 10 Home is $119.99 (US dollar). Windows 10 Pro is $199.99 (US dollar). These are available in stores or online.