10 Best FREE Online Audio Converters (2025)

Converting audio files to a new format is surprisingly common. All MP3 players are not created equal. It may be necessary to convert the recording to a supported format before using it in particular software or reduce its overall size before email or uploading it to a cloud service.

For whatever reason, the Internet is a valuable tool. Many audio file converters are available, each with its functions and intended audience. Curious to find out more? Learn about the best online audio converters for speedy file format changes.

Best Free Online Audio Converters

These resources are also helpful if the music app on your phone or tablet doesn’t recognize the format of a newly downloaded song. With the help of a converter, you may transform that rare format into one your program can read.

If you’re interested in checking out some free audio converter sites, keep reading. We’ve included a rundown of the finest in this post. C’mon, then, and we’ll get going.

1. FileZigZag

FileZigZag may be ideal for a web-based music converter that supports the most popular audio file formats. It’s a website that requires you to upload and convert your audio file.

You can convert your file online and get an email when it’s done. You can avoid waiting around while the website processes your audio file. Almost any popular audio file format can be played by FileZigZag.

Your audio files are checked for security and deleted after 24 hours on the site. So, FileZigZag is reliable for protecting your music collections.

2. Zamzar

Zamzar is a web-based service that can convert many different types of audio and music files. To begin the conversion process, select the file from your computer to upload or enter the URL of the online file you wish to convert.

Zamzar’s conversion speed can be subpar at times compared to other online audio converter services. Nonetheless, the download link is available immediately; no email is required. You can either wait for an email to be sent or stay on the download page and click the button to start downloading the converted file when it becomes available.

It’s compatible with all major operating systems and browsers, including Windows, macOS, and Linux. You may use Zamzar to convert files via email by sending an email with the file attached (1 MB limit for free users) to a designated email address.

3. VLC Audio Converter

If installed on your device, you can use VLC to convert audio files. Your ears are not deceiving you; yes, you read that correctly. This free, open-source software is a versatile media player and a capable audio converter for everyday tasks.

It supports 10 different output formats and works with the most popular audio file types, such as MP3, AAC, WAV, FLAC, OPUS, and many more. It also facilitates easy CD ripping.

VLC, as music converter software, would have more steps to complete conversion than Free HD Video Converter and Freemake. For further reading, please see the VLC converter.

4. Audacity

With its open-source design and portability across operating systems, Audacity may be used for various audio processing jobs. In addition, it is a leading audio converter for lossless audio files (It supports file exporting to 16-bit PCM WAV and AIFF).

Audacity is also a reliable tool for basic audio conversions. You can import files in MP3, WAV, AIFF, AU, or OGG format and export them in MP3, WAV, or OGG format. If you’ve loaded specific FFmpeg plugins, you can convert almost anything.

However, the main benefit of using Audacity is that you can edit music files like a pro before converting them. In a nutshell, those with more experience should choose Audacity.

5. Hamster Audio Converter

It seems to be an Android audio converter, but it isn’t. Hamster Free Audio Converter is the best free audio converter available for Windows PCs, and the learning curve is minimal.

On the downside, its file input capability is a little lacking (it covers major audio formats, though). While it supports standard audio file formats like MP3, AAC, and WAV for export, it also provides presets for a wide range of portable media players.

In addition to its other features, the free software allows users to merge audio files. Hamster Free Audio Converter lacks the complex capabilities of other converters, making it a basic software.

6. OnlineAudioConverter

Even though it’s not as well-known as other options, OnlineAudioConverter is a top-notch option for converting audio files online. The online audio converter is helpful because it supports more than 300 audio file formats.

You can even convert videos to audio by uploading them. That’s right; you can also use this service to rip music from a video.

However, if you’re looking for more advanced audio configuration options, OnlineAudioConverter has you covered there, too. Before converting audio files, you can adjust many settings, including quality, bitrate, frequency, and the number of channels.

7. Aconvert

The Zamzar at the top of the page is comparable to Aconvert. Aconvert, like Zamzar, is an online service that allows you to convert between various file types.

The design of Aconvert’s interface emphasizes clarity and simplicity. To convert a file, you must first upload it before choosing the output format, audio bitrate, and sample rate.

Quickly and easily, have your audio file converted on this site. With Aconvert, you can convert files and store them in cloud-based services like Dropbox or Google Drive.

8. Notta Ai

If you need to convert audio files to a different format and want a free online service, you may want to try Notta Ai. The file is compatible with numerous audio codecs, including MP3, WAV, AAC, AIFF, M4A, MP4, AVI, FLV, MOV, and WMV.

Notta Ai allows you to convert up to five audio files simultaneously, making it ideal for batch processing. However, the largest item you may upload is 200MB, which is plenty for an audio file.

As an added bonus, the site is concerned with your privacy and security, so it only uses local browser processing and never uploads files to a remote server.

9. MediaHuman Audio converter

Because of its intuitive design, MediaHuman’s Audio Converter is among the most straightforward operating programs. It is easy to use and supports a wide variety of audio file types, including lossless-to-lossless conversions.

You can drag and drop files, entire folders, or even complete iTunes playlists into the program and start the converting process with a single click (or apply a setting to begin conversion automatically).

The options provide further settings. You can set the output folder structure, whether or not to destroy the source files, whether or not to search online for cover art, and more.

10. WinFF

WinFF is an excellent music converter and a free, high-quality video converter. Audio files can be converted to standard formats, including MP3, OGG, WAV, and WMA, with little effort. Although it has few extra functions, it performs without a hitch.

Once you’re ready to add audio, click Add and choose from your files. Then, select Audio in the Convert to the menu, and last, choose a preset for your file type in the Preset menu. Click Options, then select the Audio tab to make changes to the individual settings of the preset. Once you’re ready, select Convert.

WinFF is not as flashy as some of the other programs we’ve covered because it uses the Windows command line to show you the progress of your conversion. However, before committing to a conversion, you can hear a preview of the output by clicking the Preview button.