AC3 file - How do I open a .ac3 file?
The table below provides useful information about the .ac3 file extension. It answers questions such as:
- What is the .ac3 file?
- What program do I need to open a .ac3 file?
- How can the .ac3 file be opened, edited or printed?
- How can I convert .ac3 files to another format?
Table of Contents
- ✅ AC-3 Compressed Audio
- ✅ SPICE AC/Frequence Data
- 🔄 .ac3 file converters
- 🚫 .ac3 file related errors
We hope you find this page helpful and a valuable resource!
1 extension(s) and 1 alias(es) found in database
✅ AC-3 Compressed Audio

The AC3 file is an AC-3 Compressed Audio. Lossy format designed for the efficient encoding of surround sound, developed to support motion picture presentations in theaters and at home.
✅ SPICE AC/Frequence Data

The AC1 file is a SPICE AC/Frequence Data. SPICE (Simulation Program with Integrated Circuit Emphasis) is a widely-used circuit simulation program. It was developed as public domain software at the University of California and versions 2G6 (vanilla SPICE) and 3.0 are still used.
Other types of files may also use the .ac3 file extension.
🚫 The .ac3 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 .ac3 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.ac3
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 .ac3 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 .ac3 file extension, write to us!