RFC 4180 · INFORMATIONAL · 2005
SUN · 14 JUN 2026
Common Format and MIME Type for Comma-Separated Values Files
Overview
RFC 4180, “Common Format and MIME Type for Comma-Separated Values Files”, is an Informational document published in October 2005 by Y. Shafranovich. It has since been updated by RFC 7111. The canonical text is published by the RFC Editor.
Abstract
This RFC documents the format used for Comma-Separated Values (CSV) files and registers the associated MIME type "text/csv". This memo provides information for the Internet community.
What “Informational” means
Published for the general information of the community. It does not define an IETF standard and carries no standards-track status.
Read this RFC
The canonical text of RFC 4180 is hosted at rfc-editor.org. Available in TXT,HTML.
Relationships to other RFCs
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