WMA
→
SPX

Convert WMA to SPX Online

Convert WMA to SPX online. Start with free daily conversions, no install, no watermarks, and visible job status.

WMA to SPX Converter

Upload your WMA file to convert it to SPX format

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How to Convert WMA to SPX

Follow these simple steps

1

Step 1: Upload Your File

Upload your WMA file by dragging and dropping or clicking to browse

2

Step 2: Select Output Format

SPX is automatically selected as the output format

3

Step 3: Start Conversion

Click the Convert button to start the conversion

4

Step 4: Download Result

Download your converted SPX file when ready

Convert WMA to SPX - Complete Guide

Converting WMA to SPX stays in the audio file family but changes the traits that decide size, quality, transparency, editability, or device support. WMA is a audio format. Windows Media Audio. SPX is a audio format. Speex audio. Below is what actually changes in a WMA→SPX conversion, what is preserved, and when SPX is the better choice than keeping WMA.

What changes when you convert WMA to SPX

  • Both WMA and SPX are lossy, so the file is re-compressed during conversion. Keep the output quality or bitrate at or above the source to avoid a visible or audible drop.
  • The audio is re-encoded into the SPX format. Because re-encoding is not free, start from the highest-quality source you have and keep quality settings high.

About the WMA format

WMA (Windows Media Audio) is Microsoft's audio format. While native to Windows, it has limited compatibility elsewhere. Our converter transforms WMA to universal formats.

  • Full name: Windows Media Audio
  • Developer: Microsoft
  • Compression: Lossy/Lossless
  • Opens with: Windows Media Player, VLC

Where WMA is strong: compact audio from the Windows ecosystem.

Typical WMA uses: legacy Windows audio.

About the SPX format

SPX is a audio format. Speex audio.

  • Compression: lossy
  • Opens with: VLC, Audacity, FFmpeg

Where SPX is strong: open, royalty-free codec tuned for speech; very small files for voice; low latency for real-time use.

Typical SPX uses: voice over IP and recordings, spoken-word archives, low-bandwidth speech.

What SPX keeps

  • SPX adds: open, royalty-free codec tuned for speech.

Things to watch out for

  • One SPX limitation to keep in mind: poor quality for music.

When to convert WMA to SPX

  • Convert WMA to SPX for voice over IP and recordings.
  • Convert WMA to SPX for spoken-word archives.
  • Convert WMA to SPX for low-bandwidth speech.

WMA vs SPX — format comparison

A quick side-by-side of the structural differences between WMA and SPX, so you can confirm this is the right conversion for your file:

AttributeWMASPX
TypeAudio fileAudio file
CompressionLossyLossy
Web-friendlyNoNo
Typical file sizeSmallSmall
Best forlegacy Windows audiovoice over IP and recordings

Privacy & Security

Files are handled for the conversion you request. Uploads and downloads use HTTPS/TLS, and temporary files are cleared after the processing and deletion window.

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Need the opposite conversion?

Convert SPX to WMA

Other WMA Conversions

More formats you can convert WMA to

Convert WMA to MP3Convert WMA to WAVConvert WMA to AACConvert WMA to OGGConvert WMA to FLACConvert WMA to M4AConvert WMA to AIFFConvert WMA to OPUSConvert WMA to AC3Convert WMA to AMRConvert WMA to AUConvert WMA to CAFConvert WMA to MKAConvert WMA to WVConvert WMA to OGAConvert WMA to DTSConvert WMA to MP2
View all WMA conversions →

Convert to SPX

Other formats you can convert to SPX

Convert MP3 to SPXConvert WAV to SPXConvert AAC to SPXConvert OGG to SPXConvert FLAC to SPXConvert M4A to SPXConvert AIFF to SPXConvert OPUS to SPXConvert AC3 to SPXConvert AMR to SPXConvert AU to SPXConvert CAF to SPXConvert MKA to SPXConvert WV to SPXConvert OGA to SPXConvert DTS to SPXConvert MP2 to SPX
View all SPX conversions →

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WMA to SPX FAQ

Because both formats are lossy, the file is compressed again. Keep the output quality or bitrate at or above the WMA source and the difference will be minimal.
Upload your WMA file, confirm SPX as the output format, and click Convert. Job status is shown while the file is processed, then you can download the SPX result.
Yes. You can start with free daily conversions, with no signup required for your first jobs and no watermarks on the output. Accounts and paid plans are available for higher-volume work.
No. The WMA to SPX conversion runs in your browser on any device — Windows, Mac, Linux, iOS, or Android — with uploads and downloads over HTTPS.
WMA (Windows Media Audio) is an audio file format. WMA files can be played with various audio players and media applications.
Upload your WMA audio file to the converter, select your desired output format, and click Convert. The job status appears while the audio is processed.
You can start with free daily conversions. Accounts and paid plans are available for higher-volume work, and downloaded files are not watermarked.
You can convert WMA to proof-backed audio outputs such as MP3, WAV, AAC, OGG, FLAC, M4A, WMA, AIFF, OPUS, AC3, AMR, AU, CAF, MKA, WV, SPX, OGA, DTS, and MP2 when the source format is public-supported.
Yes! Our WMA converter works on any device including smartphones and tablets.
Choose the bitrate or output setting that fits your file-size and playback needs. Lossy formats can reduce detail compared with the source.

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