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Åv3rev 12026-03-17NIST Guide for the Use of the International System of Units (SI). NIST Special Publication 811, 2008 Edition. NIST (National Institute of Standards and Technology), Gaithersburg, MD.

angstrom

0112/2///62720#UAA023

[deprecated] 0,000 000 000 1-fold of the SI base unit metre

unit

All properties21#

Version
3
Revision
1
Preferred name
angstrom
Short name
Å
Definition
[deprecated] 0,000 000 000 1-fold of the SI base unit metre
Definition source

NIST Guide for the Use of the International System of Units (SI). NIST Special Publication 811, 2008 Edition. NIST (National Institute of Standards and Technology), Gaithersburg, MD.

Note
According to DIN 1301-3, this unit angstrom is no longer permitted.
Unit structure
m¹
Unit in text
angstrom
Unit in SGML/XML
Structured markup (math)(128 chars)
<math xmlns="http://www.w3.org/1998/Math/MathML" display="block"> <!-- UAA023 --> <mi mathvariant="normal">&#x212B;</mi> </math>
UN/ECE code
A11
Unit conversion
Structured markup (UnitsML)(507 chars)
<UnitsML xmlns="https://schema.unitsml.org/unitsml/1.0"><Unit xml:id="0112/2///62720#UAA726"><Conversions><Float64ConversionFrom xml:id="UAA726_from_UAA023" initialUnit="0112/2///62720#UAA023" multiplicand="1E-10" divisor="1" exact="true" /></Conversions></Unit><Unit xml:id="https://si-digital-framework.org/SI/units/metre"><Conversions><Float64ConversionFrom xml:id="SI::metre_from_UAA023" initialUnit="0112/2///62720#UAA023" multiplicand="1E-10" divisor="1" exact="true" /></Conversions></Unit></UnitsML>
Responsible committee
IEC/SC 3D
Publisher
IEC
Published in
IEC 62720
Status level
Standard
Version release date
2026-03-17
Revision release date
2026-03-17
Version initiation date
2026-03-17
Change request ID
C00192