What is SHX? What Opens a SHX? File Format List from WhatIs.com

File Extension

SHX File Format

Shape entities (AutoCAD)

SHX file format icon

SHX is a file extension for a compiled shape entities file format used by AutoDesks’  AutoCAD. AutoCAD is the most popular Computer-Aided Design (CAD) program used in architectural and engineering design.

An SHX file is the compiled machine code version of an SHP ASCII-based shape entities file, which means that programs can process SHX files much more quickly. All of the vector based fonts in AutoCAD, for example, are SHX files.

The SHX file extension is also associated with the Shapefile spatial index file (ArcView).


Learn more about SHX files:

See the IT Knowledge ExchangeAutoCAD FAQ.

Ask CAD-related questions at IT Knowledge Exchange.

Visit the AutoCAD webpage.

This was last updated in August 2010
Editorial Director Margaret Rouse

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