Step 1: Download, Install and Run This Tool.
Now, you will see the screen as shown on figure.
Step 2: Select OST file by clicking on "Browse" button.
Step 3: Select the required file that you want to convert in .pst or other format.
Step 4: Now, start the scan process by clicking on "Scan" button.
Step 5: In this step, you can check the preview of OST file items.
Step 6: To finalize the process, click on "Save" button.
Step 7: Click on required file format for saving OST file and select the desired location to save converted file.
Step 8: Click on "Save" button to finish the process.