Key:height
 height
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| Description |
|---|
Physical attribute of other keys. Height is the measurement of vertical distance. It indicates how "tall" something is.  
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| Group: Properties |
| Used on these elements |
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| Useful combination |
| See also |
| Status: de facto |
| Tools for this tag |
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The key height=* describes the actual height of a feature.
Tagging
Units
The default unit is metres. If the height is measured in a different unit, the unit abbreviation is appended to the value, separated by a space (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.
Sources
The source of the height information can be specified by source:height=*. The accuracy of the height information can be specified by height:accuracy=* (see also: ele:accuracy=*).
Examples
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 metres, 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 
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
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The space between value and unit is missing. | height=4 m |
height=0,8
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The comma is used as wrong decimal separator. | height=0.8 |
height=11' 4"
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There should not be a space between feet and inches. | height=11'4" |
Possible tagging mistakes
See also
- est_height=* may be used for estimated values of height
- Overview of possible units
- Specification of the elevation above mean sea level via ele=*
- Specification of the maximum permissible height of vehicles via maxheight=*
- Specification of the width via width=*
- Specification of the length via length=*
- Specification of the depth of a feature or a level via depth=*
- Specification of distance via distance=*