Click the «Choose files» button and select the SPX files you want to convert to AAC.
Select «AAC» as the target format. Click «Convert» to start converting SPX to AAC. It only takes a few seconds.
Done! Your SPX file has been converted to AAC 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.
Advanced Audio Coding (AAC) is an audio coding standard for lossy digital audio compression. Designed to be the successor of the MP3 format, AAC generally achieves higher sound quality than MP3 at the same bit rate.
| 🔁 Conversion | SPX to AAC |
| ⏱ Time to convert | 20 seconds |
| 💳 Cost | Free |
| 📂 File types | Audio |
| ✳️ File extensions | .spx, .aac |
| 📏 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 .aac 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 aac in 2 clicks. And don't pay anything for it! Our SPX to AAC Converter is free for all users.