A daily updated filename extension database!

H1T file extension

The table below provides useful information about the .h1t file extension. It answers questions such as:

  • What is the .h1t file?
  • What program do I need to open a .h1t file?
  • How can the .h1t file be opened, edited or printed?
  • How can I convert .h1t files to another format?

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

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

✅ Microsoft Help Topic Definition

H1T file is a Microsoft Help Topic Definition.
Category: Data files
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
H1T aliases:
H1T related links:
H1T related extensions:
Windows Help File

Windows Help Project

Microsoft Help Collection Definition

Microsoft Help Keywords Index

Microsoft Help VTopic Definition

Microsoft Help Compiled Help Data

Windows Help Project

Microsoft Help Validator File

Microsoft Help Merged Hierarchy File

Microsoft Help Merged Query Index

Other types of files may also use the .h1t file extension.

🚫 The .h1t file extension is often given incorrectly!

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

1t, h1h, hlt, ht, ht1, hwt

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

Fortran 1T Data
Huawei Phone Theme
Microsoft Help Merged Hierarchy File
Hangul Word Processor Template
Hyperlynx Thermal Data
HyperTerminal Settings
Humminbird Track Data
Google Desktop HT1 File

🔴 Can't open a .h1t 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 .h1t 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 .h1t file extension, write to us!

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