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Wondershare UniConverter

All-in-One Video Converter

  • Convert WebM to MP3 and 1000+ formats, like M4A, WMA, FLAC, etc.
  • Download or record videos from 10000+ video sharing sites.
  • Edit, enhance & personalize your videos via trim, crop, add subtitle and more.
  • Burn and customize your DVD with free DVD menu templates.
  • Versatile toolbox combines screen recorder, GIF maker, watermark editor, etc.

Top 3 WebM to MP3 Converter Online

by Christine Smith • 2024-01-11 10:27:37 • Proven solutions

Online tools are available for all types of tasks and file conversion is no exception to this. So, if you are looking for a simple and quick way to convert your WebM files to MP3 and others for conversion, online programs can be used. Working straight from your browser, these programs require no download or installation, and are free for the majority of the time. Know about the popular WebM to MP3 converter online tools in the following parts of the topic.

Part 2. The best alternative to Online WebM to MP3 Converter

Online converters are simple and free tools but, on the flip side, they are internet dependent, have limitations to the number of files that can be processed, and limited additional features. So, if you are looking for a powerful tool that lets you convert your files without any restrictions and in high quality, professional software like Wondershare UniConverter is an ideal choice and works as the best alternative. This Windows and Mac-based program once installed on your system allows converting files without any restrictions. Supporting over 1000 formats, all types of conversion needs can be taken care of by the software including WebM to MP3.

Wondershare UniConverter logo Wondershare UniConverter - Best WebM Files to MP3 Converter

Your Complete Video Toolbox

video converter ultimate
  • Lossless quality conversion in over 1000 formats and pre-set devices including WebM to MP3.
  • Convert WebM to optimized preset for almost all of the devices.
  • A batch conversion that processes multiple files at a time.
  • Leading APEXTRANS technology ensures lossless compression at 90 times faster than other converters.
  • Edit, enhance & personalize your videos file.
  • Burn video to playable DVD with attractive free DVD templates.
  • Download or record videos from 10000+ video-sharing sites.
  • Versatile toolbox combines fixed video metadata, GIF maker, VR converter, and screen recorder.
  • Transfer files to external hard drives, USB flash drives, Android devices, Apple devices, and other devices
  • Supported OS: Windows 10/8/7/XP/Vista, Mac OS 10.15 (Catalina), 10.14, 10.13, 10.12, 10.11, 10.10, 10.9, 10.8, 10.7, 10.6
security Security Verified, 5,942,222 people have downloaded it.

Steps to convert WebM to MP3 using Wondershare UniConverter:

Step 1 Import WebM files to Wondershare UniConverter.

Open the Wondershare software and choose the Converter tab from the left-side panel. To browse and load the local WebM files to the interface, click on the add files icon at the left corner. You can also drag and drop the files or can click on the + sign at the center of the interface. 

launch webm to mp3 converter

Step 2 Choose the output format.

Open the list at the Output Format tab and select MP3 from the Audio list. Also, select the target file quality as needed.

choose mp3 as the output format

Step 3 Convert WebM to MP3.

Your system location to save the converted files can be selected from the File Location tab. Finally, hit on the Start All button at the bottom-right corner to start the file conversion process. The Finished tab will show the processed files. 

convert webm files to mp3

Part 3. Other 2 ways to convert WebM to MP3 online

An array of other online tools for converting WebM to MP3 and other formats are available and below listed are the popular ones.

  1. Cloudconvert:

This is a free online tool that allows conversion between all popular video, audio, and other file formats including WebM to MP3. You can use the options to control video resolution, quality, and file size. The interface of this online converter WebM to mp3 is simple and the processed files can be downloaded locally.

online webm to mp3 converter


  • Support to a wide range of video and audio formats.
  • User-friendly.
  • Local, online, and files from the cloud can be added.


  • CloudConvert is only free for up to 25 conversions per day.
  • Dependency on internet connectivity.
  • No option for video editing.
  1. OnlineConvertFree:

This is a simple to use online tool that allows converting files between all key formats like WebM, MP3, MP4, MOV, and others. The process of conversion requires you to simply add the local files and select the target format. Two files at a time can be processed using this online WebM to mp3 converter and the converted files can be downloaded to your local system. 

webm to mp3 online converter


  • Simple and user-friendly interface.
  • Drag and drop functions also work for adding files.


  • Only two files at a time can be processed.
  • No option for file customization.
  • The converted file needs to be downloaded.


Thus, you can convert WebM to MP3 online free when there are only a few files and editing, and other additional features are not required. For the professional conversion of multiple files in high quality, a versatile tool like Wondershare UniConverter works best.

Christine Smith

Christine Smith

chief Editor

Resource > MP3 Solutions > Top 3 WebM to MP3 Converter Online