> For the complete documentation index, see [llms.txt](https://docs.parallels.com/landing/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.parallels.com/landing/pdfm-ug/parallels-desktop-for-mac-27-users-guide/install-or-upgrade-parallels-desktop/purchasing-parallels-desktop.md).

# Purchasing Parallels Desktop

If you're using a trial version of Parallels Desktop, you can easily purchase the full version right from the application interface. To do so:

1. Click **Buy** in the **About Parallels Desktop** window or when you see the promo.
2. Choose one of the following:
   * **Upgrade:** Select this option to upgrade your current version of Parallels Desktop. Please keep in mind that you will need the activation key for your previous version. If the **Upgrade** option is selected by default, Parallels Desktop has already automatically detected the key for the previous version. If not, please make sure you have it.
   * **Buy Full Version:** Select this option to purchase Parallels Desktop if you have never used it before.
3. Follow the onscreen instructions. You may need to scroll down to see all the information.


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