Blog – iCal Converter

Guides and tutorials on iCalendar (ICS) files, Google Calendar, Outlook, and more.

How to Import an ICS File into Google Calendar

The exact steps to import an .ics file into Google Calendar from a desktop browser, why the mobile apps cannot do it, how importing differs from subscribing to a calendar URL, what happens to recurring events, and how to get past the "Unable to process your request" error.

Why Your Calendar Events Show the Wrong Time: ICS Timezones Explained

The three ways an ICS file can express a start time, what the VTIMEZONE block does and why it is so often missing, how to read a whole-hour shift as a diagnosis, what daylight saving does to recurring events, and how Outlook and Google each guess differently when the timezone is absent.

How to Merge Multiple Calendars into a Single ICS File

Why concatenating .ics files by hand breaks the calendar, how duplicate UIDs and mismatched VTIMEZONE blocks behave when you combine exports, and what to check before importing a merged file.

ICS vs CSV for Calendar Data: Which Format Should You Use?

A property-by-property comparison of iCalendar and CSV: what recurrence rules, timezones, alarms and UIDs survive each format, when a spreadsheet is the better tool, and the round-trip workflow for bulk-editing events.

What Is an ICS File and How Do You Open One?

A practical guide to the iCalendar (.ics) format: what it contains, which apps support it, common pitfalls, and how to open or convert ICS files on Windows, macOS, iOS, and Android.

How to Convert Excel or CSV to ICS for Bulk Calendar Imports

Step-by-step instructions for turning a spreadsheet of events into an iCalendar (.ics) file you can import into Google Calendar, Outlook, or Apple Calendar — including which columns matter and how to handle dates, times, and timezones.

Why Your ICS File Won't Import into Outlook (and How to Fix It)

A practical checklist for the most common reasons an .ics file fails to import into Microsoft Outlook — wrong timezone identifiers, encoding errors, broken line folding, and the desktop-vs-web differences — plus the exact steps to fix each one.