It is possible to import text files to various subtitle editors and use the texts to create new subtitles in one of the available formats. Unless the source text file is properly formatted however, it will need heavy manual editing by the user.
Convert Simple text file to Advanced SubStation Alpha subtitles.
We have found 4 software records in our database eligible for .txt to .ass file format conversion.
Microsoft Windows software - convert txt to ass on Windows
A free subtitle editor
Convert from txt file format
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned txt to ass. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
Linux/Unix software - convert txt to ass on Linux
A software for subtitle editing and preparation
A subtitle editor for GNOME
Multiplatform software - convert txt to ass on any platform
An older freeware subtilte editing application