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Available languages — Key:height
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Public-images-osm logo.svg height
Physical attribute of other keys. Height is the measurement of vertical distance. It indicates how "tall" something is.
Group: Properties
Used on these elements
may be used on nodesmay be used on waysmay be used on areasmay be used on relations
Useful combination
Status: In use

The key height describes the height of a feature above the ground.



The default unit is meters. If the height is measured in a different unit, the unit abbreviation is appended to the value (see the examples below or the unit specification article for more information).

For height values with decimal places, use the period character as decimal separator.

Average Height

For ways or areas in which height varies, an average height can be specified.


The source of the height information can be specified by source:height=*.


Here are a few examples of how a height can be tagged.

Height Tagging Remark
Four metres height=4 Specifying the units is optional for meters, and would look like: height=4 m.
1.35 metres height=1.35 Use the decimal / full stop / period character as a separator.
7 feet and 4 inches height=7'4" Use a typewriter apostrophe character after the feet value and a typewriter double-quote character after the inches value. Spaces are not permitted.

Height of Buildings

Use the maximum height for buildings, not the average height. Specifically, the maximum is the height of a building is the distance between the top edge of the building (including the roof, but excluding antennas, spires and other equipment mounted on the roof) and the lowest point at the bottom where the building meets the terrain.

Building Parts

The height of individual parts of buildings can be specified using the Simple 3D buildings specification.

Potential Issues

Elevation Above Mean Sea Level

The Wikipedia-16px.png elevation above mean sea level for objects in OpenStreetMap is not specified using the height key. Objects using this type of measurement should use the ele=* key. For example, a mountain peak with the natural=peak tag uses the ele=* key to specify the highest point on the peak.

Restricted Height

Height restrictions, such as the vertical clearance under a bridge or through a tunnel are not tagged using the height key. Use the maxheight=* key to specify the maximum height allowed.

Incorrect Values

The following table contains examples of incorrect tags and their correct notation, which are commonly misused.

Incorrect Explanation Correct
height=4m The space between value and unit is missing. height=4 m
height=0,8 The comma is used as wrong decimal separator. height=0.8
height=11' 4" There should not be a space between feet and inches. height=11'4"

See Also

  • Overview of possible units
  • Specification of the elevation above mean sea level via ele=*
  • Specification of the width via width=*
  • Specification of the length via length=*
  • Specification of distance via distance=*
  • Specification of the maximum permissible height of vehicles via maxheight=*