Click the «Choose files» button and select the SPX files you want to convert to M4A.
Select «M4A» as the target format. Click «Convert» to start converting SPX to M4A. It only takes a few seconds.
Done! Your SPX file has been converted to M4A format. You can download it to your device.
SPX (Speex) is a lossy compressed audio file format that can be used in IP telephony and podcasts. It was developed by Xiph.Org in 2003. The SPX format is considered obsolete, its successor is considered to be the more modern OPUS.
M4A stands for MPEG 4 Audio and is a filename extension used to represent audio files. Audio-only MPEG-4 files generally have a .m4a extension. This is especially true of non-protected content. M4A is often compressed using AAC encoding (lossy) but can also be in Apple Lossless format.
| 🔁 Conversion | SPX to M4A |
| ⏱ Time to convert | 20 seconds |
| 💳 Cost | Free |
| 📂 File types | Audio |
| ✳️ File extensions | .spx, .m4a |
| 📏 File size limit | 75 MB |
| 👩💻 Supported OS | Windows, Linux, MacOS, iOS, Android |
You don't need to download and install any software to convert .spx files to .m4a format. All conversions take place in the cloud.
Your files are completely safe and accessible only to you. All files will be permanently deleted within 2 hours after conversion.
Convert your spx files to m4a in 2 clicks. And don't pay anything for it! Our SPX to M4A Converter is free for all users.