Initially, download and install the application on your Windows systems.
![download ost converte](../images/screenshot/ost/download-ost-converter.webp)
Once the software is opened, add OST file using the Browse button.
![gaintools ost converter](../images/screenshot/ost/gaintools-ost-converter.webp)
View the complete items of OST file and select the required items to export.
![open ost](../images/screenshot/ost/open-ost.webp)
Now, choose a format in which you want to export the file like PST, EML, EMLX, MSG, MBOX, VCF, ICS, etc. Pick a file format to export.
![selection of output format](../images/screenshot/ost/selection-of-output-format.webp)
Now, choose a location to save the resultant file. Then, hit the Convert Now button to begin the export process.
![export ost](../images/screenshot/ost/export-ost.webp)