SPH converter

Free online conversion of files to sph and vice versa
Select files or drag & drop them here
About SPH

An SPH file is an audio waveform file created in the NIST SPHERE format that is often used in speech recognition research. It usually contains a recording of the person speaking. SPH files are rare, so they are not supported by popular media players. You can convert SPH to WAV with MiConv.

How to convert a file to SPH?

Click the «Choose files» button and select the files you want to convert. The maximum file size is 75 MB.

Select «SPH» as the target format. Click «Convert» to start converting files to SPH. It will only take a few seconds.

You did it! Your files have been converted to SPH format. Now download them to your device.

Supported conversions

MiConv can convert files to SPH format and vice versa. Check the table below.
Convert from SPH
Convert to SPH

Advantages of MiConv

Online SPH conversion

You don't need to download and install any software to convert files to .sph format. All conversions take place in the cloud.

File security

Your files are completely safe and accessible only to you. All files will be permanently deleted within 2 hours after conversion.

Fast and free

Convert your sph files in 2 clicks. And don't pay anything for it! This SPH converter is free for all users.

See also

In addition to SPH, we can convert many other file formats. Here are some popular conversions:
Over 1,500,000 users in 235 countries have used MiConv to convert files in 2022

So you're in good company! 👍🏻