MP3 to SPH Converter

Batch convert mp3 files to sph online. Change mp3 to sph on Windows, Mac, iPhone and Android in 2 clicks.

Select files for conversion or drag and drop them to the upload area.
Your files are securely protected and available only to you.
All files are automatically deleted from our servers after 1 hour.

How to convert MP3 files to SPH online?

Step-by-step instructions for converting mp3 files to sph

Upload MP3-file

Click "Choose File" button to select a mp3 file on your computer. MP3 file size can be up to 100 Mb.

Convert MP3 to SPH

Click "Convert" button to start conversion.

Download your SPH

When the conversion process is complete, you can download the SPH file.


  • ❓ How can I convert MP3 to SPH?
    First you need to add file for conversion: drag and drop your MP3 file or click the "Choose File" button. Then click the "Convert" button. When MP3 to SPH conversion is completed, you can download your SPH file.
  • ⏱️ How long does it take to convert MP3 to SPH?
    Audio conversion is pretty fast. You can change MP3 to SPH in a few seconds.
  • 🛡️ Is it safe to convert MP3 to SPH on AnyConv?
    Of course! We delete uploaded files immediately, and converted ones after 1 hour. No one has access to your files. File conversion (including MP3 to SPH) is absolutely safe.
  • 💻 Can I convert MP3 to SPH on Mac OS or Linux?
    Yes, you can use AnyConv on any operating system that has a web browser. Our MP3 to SPH converter works online and does not require software installation.

Information about MP3 and SPH file formats

Name MP3 SPH
Full name MP3 - MPEG-1 or MPEG-2 Audio Layer III NIST SPHERE Audio File
File extension .mp3 .sph
MIME type audio/mpeg, audio/MPA, audio/mpa-robust
Developed by Fraunhofer Institute Institute of Standards and Technology (NIST)
Type of format Digital audio
Description MPEG-1 or MPEG-2 Audio Layer III, more commonly referred to as MP3, is an audio coding format for digital audio that uses lossy data compression. It is a common audio format for consumer audio streaming or storage and a de facto standard of digital audio compression for the transfer and playback of music on most digital audio players. Waveform audio file created in the NIST SPHERE format, which is often used in speech recognition research; often contains a recording of a person speaking; can be provided as input to speech recognition systems.
Technical details Lossy compression is designed to reduce significantly the amount of data required to represent the audio recording and still sound like a faithful reproduction of the original uncompressed audio. For example, an MP3 file created using the setting of 128 kbit/s will result in a file about 1/11 the size of the CD file created from the original audio source.
File conversion MP3 conversion SPH conversion
Associated programs VLC media player, MPlayer, Winamp, foobar2000. SoX
MP3 to SPH conversion quality rating:
4.9 (242 votes)
You need to convert and download at least 1 file to leave a rating!