About the Speex file format
Speex Audio (Speex) is an audio format supported by mp3.now for conversion, extraction, or playback workflows.
The guide and converter lists are generated from the live MP3.now catalog, so every conversion shown here is available.
Why Speex files are used
Speex Audio files store digital audio using the .spx extension.
Audio formats differ in compression, quality, metadata, channel support and compatibility with players and editing software.
What to know about Speex
Audio encoding
Speex uses format-specific rules to store or compress sound.
Quality and size
Bit rate, sample rate, bit depth and compression influence both fidelity and file size.
Metadata
Track titles, artists, artwork and other tags may be supported depending on the format.
Compatibility
Support for Speex varies across browsers, devices, editors and media players.
How Speex conversion works
Converting Speex decodes the source audio and encodes it with the destination format's codec and selected quality settings.
Lossy conversion cannot restore detail already removed from the source, so keep the original when quality matters.
mp3.now accepts Speex as an input and converts its audio to MP3.
Speex compatibility and software support
Check that the target player or editing application supports Speex before choosing it for delivery.
MP3 remains a practical fallback when broad playback compatibility is the priority.
Speex and related formats
When should you use Speex?
- Everyday listening: Prepare audio for phones, computers and portable players.
- Editing: Move sound into a format supported by an audio editor.
- Publishing: Create audio for websites, podcasts or distribution platforms.
- Archiving: Keep a high-quality source and create smaller access copies.
Convert from Speex
Use Speex as the source.
Speex file format FAQ
What is a Speex file?
Speex Audio (Speex) is an audio format supported by mp3.now for conversion, extraction, or playback workflows.
Can MP3.now convert Speex files?
mp3.now accepts Speex as an input and converts its audio to MP3.
What changes when Speex is converted?
Converting Speex decodes the source audio and encodes it with the destination format's codec and selected quality settings.
Should I keep the original Speex file?
Lossy conversion cannot restore detail already removed from the source, so keep the original when quality matters.