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IQDAT file extension

The table below provides useful information about the .iqdat file extension. It answers questions such as:

  • What is the .iqdat file?
  • What program do I need to open a .iqdat file?
  • How can the .iqdat file be opened, edited or printed?
  • How can I convert .iqdat files to another format?

Table of Contents

We hope you find this page helpful and a valuable resource!

1 extension(s) and 0 alias(es) found in database

✅ Inquisit Data

IQDAT file is an Inquisit Data. Inquisit is a general purpose psychological experimentation application for designing and administering psychological experiments and measures.
IQDAT format description not yet available
Category: Data files
Application: Inquisit
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
IQDAT aliases:
IQDAT related links:
IQDAT related extensions:
Inquisit Script

Inquisit Script Package

Other types of files may also use the .iqdat file extension.

🚫 The .iqdat file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

idat, qdat

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

Illumina BeadArray Data
QuickTime Install Cache

🔴 Can't open a .iqdat file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows cannot open this file:


To open this file, Windows needs to know what program you want to use to open it...

If you don't know how to set the .iqdat file association, check the FAQ.

🔴 Can I change the extension of files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.

If you have helpful information about the .iqdat file extension, write to us!

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