|Physical attribute of other keys. Height is the measurement of vertical distance. It indicates how "tall" something is.|
|Used on these elements|
|Status: In use|
|Tools for this tag|
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.
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.
|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.
The height of individual parts of buildings can be specified using the Simple 3D buildings specification.
Elevation Above Mean Sea Level
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.
The following table contains examples of incorrect tags and their correct notation, which are commonly misused.
||The space between value and unit is missing.||height=4 m|
||The comma is used as wrong decimal separator.||height=0.8|
||There should not be a space between feet and inches.||height=11'4"|