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: In this step, you can check the preview of OST file items.
Step 4: To finalize the process, click on "Export" button.
Step 5: Click on required file format for saving OST file and select the desired location to save converted file.
Step 6: Click on "Convert" button to finish the process.