How to Convert PST File to ICS File (iCalendar) Smoothly? – Powerful Guide

Sarabjeet Kaur | ICS outlook pst software technology | 4 minutes read | Modified on: 24-06-2025
how to convert pst file to ics file

Are you seeking to convert PST file to the ICS file (iCalendar) format? You’ve come to the right place! In this write-up, we’ll guide you through both a reliable third-party tool and a free manual method to effortlessly import your Outlook PST files into iCalendar format. So, let’s dive right in and get started.

A PST file is an essential component of Microsoft Outlook. It stores all your email messages, contacts, calendar events, tasks, and other Outlook items in one place. PST files are commonly used for archiving, backing up, importing, and exporting Outlook data. Due to the variety of content they hold, PST files can grow quite large.

In contrast, ICS (iCalendar) is a widely used open standard format designed for sharing calendar information across different platforms and applications. ICS files contain calendar events, tasks, and notes in a simple text format. They’re compatible with popular calendar apps such as Google Calendar, Apple Calendar, and Outlook, making it easy for users to download, share, and sync calendar events via email or other methods.

PST vs ICS: Understanding the Key Differences

FeaturesPST (Personal Storage Table)ICS(iCalendar)
PurposeSaves Outlook emails, calendars, contacts, and other items.Saves calendar events, tasks, and schedules only
File TypeProprietary Outlook Data FileOpen standard calendar file type
CompatibilityMainly utilized by MS OutlookCompatible with Microsoft Outlook, Apple Calendar, Google Calendars, etc.
UsageArchive, backup, import, and export Outlook mailbox dataSyncing and sharing calendar events across platforms
SharingGenerally shared as backup filesSimply shared through URL link or email
Data StoredAttachments, emails, tasks, notes, journals, etc.Reminders, to-do list, and calendar events
FormatBinary formatText-based format (plain text)

Techniques: How to Convert PST File to ICS File?

In this section, we’ll walk you through two effective methods to convert your calendar data from Outlook to ICS format. The first is a manual process that requires Microsoft Outlook installed on your computer. The second is an expert solution that works independently of Outlook. Choose the option that best fits your needs and technical comfort level.

Manual Steps to Import PST Files to ICS Format Using MS Outlook

  1. Open Microsoft Outlook on your system.
  2. Click the Calendar icon to access your calendar view.
  3. Choose the specific calendar you want to export to ICS format.
  4. Go to the File menu and select Save Calendar.
  5. Enter a file name and select the Save as option.
  6. Choose the destination folder where you want to save the ICS file.
  7. Finally, click Save to complete the export process and create your ICS calendar file.

Restrictions of Manually Transferring PST to ICS

  • Large calendar files may fail to export successfully.
  • There is a risk of data loss or incomplete export.
  • The process involves many steps, making it time-consuming.
  • Home users may find the procedure complicated and need detailed guidance.

To avoid these challenges, we suggest using a professional PST to ICS Converter Tool that offers a secure, efficient, and reliable way to convert PST to ICS with complete accuracy and minimal effort.

Effortless & Reliable: Convert PST to ICS with An Expert Outlook to ICS Converter

BitData Migration PST Converter is a top-rated solution for users looking to convert large PST files to ICS format without compromising formatting, structure, or data accuracy. This advanced software is designed for speed, precision, and ease of use helping you achieve flawless conversions in just a few clicks.

Key Features Include:

  • Simple, user-friendly interface
  • Maintains original folder hierarchy
  • Preserves formatting and metadata
  • Selective conversion from specific folders
  • Bulk PST to ICS conversion
  • Save PST to PDF, CSV, OLM, EML, MBOX, MSG, DOC, XPS, JPG, GIF, Thunderbird, IMAP, Gmail, G Suite, Office 365, Exchange Server, etc.

One of the best parts? You can try it for free! The trial version allows you to convert the first 25 items from each folder, giving you a risk-free way to test the tool’s performance and features.

Steps to Import Outlook PST Files to iCalendar ICS Format

  1. Launch the PST to ICS Converter after successfully downloading and installing it on your system.
  2. To upload your PST files, tap on “Select File” or “Select Folder”.
  3. Pick the specific PST folders you want to convert to the iCalendar (ICS) format.
  4. From the Select Saving Option list, select ICS as your desired output format.
  5. Set the destination path where you want to save the ICS files, and explore additional features like data filtering if needed.
  6. Finally, click the “Convert” tab to begin the process. The tool will quickly generate ICS files from your PST calendars.

Manual vs. Professional – Which PST to ICS Conversion Method Truly Works Best?

FeaturesManual MethodExpert PST to ICS Tool
Outlook RequiredYesNo
Bulk Conversion SupportLimitedYes (Convert multiple PST files at once)
Data Loss RiskPossibleNo – Maintains 100% data integrity
Ease of UseRequires technical stepsBeginner-friendly interface
Folder SelectionNot customizableAllows selective folder conversion
Advanced FiltersNot availableAvailable (Date, subject, etc.)
SpeedTime-consumingFast and efficient
Free Demo AvailableNoYes (Convert first 25 items per folder)
Multiple Output FormatsNo (ICS only via export)Yes (ICS, PDF, OLM, EML, MSG, etc.)
Preserves FormattingNot guaranteedYes – Keeps formatting, metadata, attachments
So, what’s the bottom line?

We hope you now have a clear understanding of how to convert PST file to ICS file whether you choose to do it manually using Outlook or with the help of a professional Outlook Converter Tool. In this segment, we’ve covered both approaches: the step-by-step manual method and a smart, alternative solution using one of the best PST to ICS Conversion Tool available.

While both methods can get the job done, if you’re looking for speed, accuracy, and a hassle-free experience especially when handling large volumes, we highly recommend going with the expert program trusted by experts.