Additional Units for SenML

Document Type Replaced Internet-Draft (individual)
Author Carsten Bormann 
Last updated 2019-08-29
Replaced by RFC 8798
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Intended RFC status (None)
Expired & archived
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IESG IESG state Replaced by draft-ietf-core-senml-more-units
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


The Sensor Measurement Lists (SenML) media type supports the indication of units for a quantity represented. This short document registers a number of additional unit names in the IANA registry for Units in SenML. It also defines a registry for secondary units that cannot be in SenML's main registry as they are derived by linear transformation from units already in that registry.


Carsten Bormann (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)