3DH file - How do I open a .3dh file?
The table below provides useful information about the .3dh file extension. It answers questions such as:
- What is the .3dh file?
- What program do I need to open a .3dh file?
- How can the .3dh file be opened, edited or printed?
- How can I convert .3dh files to another format?
Table of Contents
- ✅ SeisWorks Horizontal Time-slice Format Data
- 🔄 .3dh file converters
- 🚫 .3dh file related errors
We hope you find this page helpful and a valuable resource!
1 extension(s) and 0 alias(es) found in database
✅ SeisWorks Horizontal Time-slice Format Data

The 3DH file is a SeisWorks Horizontal Time-slice Format File. Seisworks is an integrated seismic interpretation package released by Landmark Graphics Incorporated.
Other types of files may also use the .3dh file extension.
🚫 The .3dh file extension is often given incorrectly!
According to the searches on our site, these misspellings were the most common in the past year:
Is it possible that the filename extension is misspelled?
We found the following similar file extensions in our database:
🔴 Can't open a .3dh 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:
example.3dh
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 .3dh 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 .3dh file extension, write to us!