>> ICALTODO file

ICALTODO file format description

Many people share .icaltodo files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .icaltodo file can be edited, converted or printed with. On this page, we try to provide assistance for handling .icaltodo files.

1 filename extension(s) found in our database.

.icaltodo - iCal To Do List

The ICALTODO data files are related to Apple Calendar. ICALTODO file is an iCal To Do List. iCal (Apple Calendar) is a personal calendar application made by Apple Inc.

Apple Calendar
Data files
- / -
iCal To Do List related extensions:
Linux Trash Storage Metadata
Thinkfree Office NEO Show Theme
PTC Creo Site Parameter Data
PTC Creo Shade Display Data
PTC Creo Mill Grooving Parameter Data
Geomview Transformation Matrices Data

Naturally, other applications may also use the .icaltodo file extension. Even harmful programs can create .icaltodo files. Be especially cautious with .icaltodo files coming from an unknown source!

Can't open a .icaltodo file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

Operating systems currently supports the following operating systems:

Windows XP/Vista, Windows 7/8, Windows 10, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, Mac OS X, iOS, Android

If you find the information on this page useful, please feel free to link to this page.

If you have useful information about the .icaltodo file format, then write to us!