Sometimes you find yourself with a file in a format that no program on your computer supports. When this happens you usually have two options.
You can either purchase the program that opens the file or you can use free file converter software to convert the file to a format that some program on your computer actually does support. It's a common problem especially among movie, music, and photo/graphics files.
Below are links to the best free video converters, audio converters, image converters, and document converters:
Tip: See Other Converters at the bottom of the page for free file converter software for other types of files.
Video converter software converts one kind of video file into another. Most video converters support popular formats like 3GP, AVI, DIVX, F4V, FLV, V4V, MKV, MOV, MP4, MPG, SWF, WMV, and many more.
Many video converters can also convert DVD and BD movies into various other video formats like MP4, FLV, AVI, etc. Some of these output formats are ideal for use in mobile devices.
There are several fantastic, completely free video converters available as you'll see in this list of the best of the best.
Audio converter software converts one kind of audio file into another. Most audio converter programs support common music formats like FLAC, OGG, M4A, MP3, WAV, WMA, and several more.
Some audio converters can also extract audio information from video files.
There are many high quality, completely free audio converters as you'll see in this list.
Image converter software converts one kind of photo or graphic file into another. The best image converters support hundreds of common and rare image formats but almost all of them can convert BMP, EMF, GIF, ICO, JPG, PCX, PDF, PNG, PSD, RAW, TIF, WMF, and several others.
Many image converters also feature batch operation, allowing you to convert several files into a particular format all at once.
Some of the best image converters available are completely free, as you'll see in this list of the best available.
Document converter software converts one kind of document file - like word processing, spreadsheet, database, presentation, etc. - into another of a similar type.
Most document converters support common formats like DOC, DOCX, PDF, PPT, TIF, TXT, WKS, XLS, XLSX, and many more.
Some free document converters can even convert image formats with text information to actual text-based files, allowing you to edit information you couldn't before. This is called optical character recognition (OCR).
Obviously, not all files are video, audio, image, or document based. The free file converters in this list convert between many less common formats.
Here I've included free disc image converters (ISO, IMG, etc.), free font converters (TTF, OTF, DFONT, etc.), free compressed file converters (ZIP, RAR, CAB, etc.), and many more.