Try out our new RRULE tool for creating RRULE compatible strings.

Parameter Name



To specify the language for text values in a property or property parameter.

Format Definition

This property parameter is defined by the following notation:

 languageparam = "LANGUAGE" "=" language

 language = Language-Tag
            ; As defined in [RFC5646].


This parameter identifies the language of the text in the property value and of all property parameter values of the property. The value of the "LANGUAGE" property parameter is that defined in [RFC5646].

For transport in a MIME entity, the Content-Language header field can be used to set the default language for the entire body part. Otherwise, no default language is assumed.


The following are examples of this parameter on the "SUMMARY" and "LOCATION" properties:

 SUMMARY;LANGUAGE=en-US:Company Holiday Party



This document was automatically converted to XHTML using an RFC to HTML converter with the original text document at the Internet Engineering Task Force web site at .  The original text document should be referred to if there are any errors or discrepancies found in this document.

Need to test your iCalendar feeds?

The iCalendar Validator provides developers and testers a method to validate their iCalendar feeds, which can take data from either a URL, file or text snippet and compare it against the RFC 5545 specification.  We believe we have one of the best iCalendar validation tools available on the internet. More information about the validator can be found here.