Free MP4 to MP3 Converter: 7 Tools Compared (2026)

Looking for an MP4 to MP3 converter that is free and does not fight you? Below are seven options across desktop, mobile and the browser, with what each one costs and what its limits are, taken from the vendor’s own page.

Vendor information last verified: 18 September 2026. Prices are in US dollars as shown on each vendor’s US page.

Only convert files you own or have permission to use. If the MP4 came from YouTube or another platform, follow that platform’s terms.

Introduction

We interact with media formats every day, in the music we listen to and the videos we watch. Two of the most common formats are MP4 and MP3. MP4, or MPEG-4 Part 14, is a digital multimedia container format commonly used to store video and audio, but it can also store other data such as subtitles and images. It plays on almost every platform and device.

MP3, or MPEG-1 Audio Layer III, is an audio coding format. It compresses audio by discarding data, and at higher bitrates the loss is often hard to hear. It drove the rise of digital audio in the late 90s and is still the default choice for audio files.

The Basics of MP4 to MP3 Conversion

Before we look at the benefits, here is what happens when you convert an MP4 file to an MP3. The process, known as transcoding, extracts the audio data from the MP4 file and encodes it in the MP3 format.

To put it simply, imagine an MP4 file as a book with pictures (video data) and text (audio data). If you were asked to turn this book into an audio book (MP3), you would read out the text and skip the pictures. That is what the conversion does. It extracts the audio and discards the video, which leaves a much smaller file. You can also extract audio from videos directly online without installing any software.

Many software and online tools can do this, and most need little technical knowledge. You upload or select your MP4 file, choose MP3 as the output format, and start the conversion. Depending on the size of the file, the MP3 is ready in moments.

Top 10 Benefits of Converting MP4 to MP3

Here is why people convert MP4 to MP3:

1. Space Efficiency: MP3 files are smaller because they only contain audio data, whereas MP4 files contain both audio and video data. You can store more MP3 files in the same space.
2. Portability: MP3 files play on smartphones, tablets, computers and many smart TVs and car stereos.
3. Focus on Audio: Without the video, you can concentrate on what is being said. This helps with tasks that need focus, such as transcription.
4. Internet Bandwidth: Streaming an MP3 uses less bandwidth than streaming the same content as video, so it loads faster on slow connections.
5. Battery Life: Playing audio alone usually uses less battery than playing video, because the screen and video decoder are not working.
6. Creating Audio Books and Podcasts: Converting lectures or interviews you have the rights to into MP3s is a quick way to make audiobook or podcast episodes.
7. Learning Aid: Language learners often benefit from listening to audio repeatedly. With an MP3, they can replay the audio without watching the video each time.
8. Ease of Editing: Most audio editors open MP3 files directly, which makes them easy to trim for ringtones or clips.
9. Accessibility: Audio versions of video content can help people who are blind or have low vision.
10. Ease of Sharing: Smaller files are easier to share by email, cloud storage or messaging apps.

How we picked these tools

The list is editorial judgement, not a lab test. We included a tool if its own page or store listing shows that it converts video files to MP3, states its price, and is still available. We removed tools that only pull videos from YouTube and other sites by URL, and apps we could not match to one store listing.

Best Desktop Tools for Converting MP4 to MP3

When choosing a tool, look at ease of use, conversion speed, output settings and extra features.

1. iMyFone Filme

iMyFone Filme is a video editor for Windows and Mac. Its product page says it can “detach audio from any video just in 1 click” and supports 50+ audio formats.

• Ease of Use: Import your MP4, detach or export the audio, and save it.
• Editing Features: As a video editor, it also lets you trim and cut before you export.
• Free Trial: The free version has every feature, but exported videos carry a watermark (iMyFone Filme FAQ).
• Price: The product page lists US$29.95 for 1 month, US$39.95 for 1 year and US$79.95 for lifetime.

Filme makes sense if you also want a simple video editor. For audio extraction alone, VLC below is free.

2. VLC Media Player

VLC Media Player plays almost any media file and can also convert files. Here is why it is on the list:

• Free and Open Source: VideoLAN describes VLC as free and open source, with “no spyware, no ads and no user tracking”.
• Wide Format Support: VLC reads a wide range of formats, including MP4, and can write MP3 through its Convert/Save dialog.
• Cross-Platform Compatibility: VLC is available for Windows, macOS, Linux, Android and iOS (VideoLAN).
• Ease of Use: The Convert/Save dialog is not as intuitive as a dedicated converter, but it is straightforward once you have used it once.
• Advanced Settings: You can set the bitrate, channels and sample rate of the output file.

Our pick for a free desktop converter is VLC, because it is free, has no ads and runs on every major platform (editorial judgement based on the vendor’s page).

3. Adobe Audition

Adobe Audition is a professional audio workstation. Here is what it adds:

• Professional Editing: Adobe’s product page lists “multitrack, waveform, and spectral display for creating, mixing, editing, and restoring audio content”.
• Cost and Availability: Audition is part of Creative Cloud. Adobe lists it at US$22.99 a month on an annual plan billed monthly (Adobe).
• Free Trial: The trial lasts seven days on macOS and Windows and then turns into a paid membership unless you cancel (Adobe free trial page).

Audition is overkill for simple conversion. It makes sense if you also need to clean up and edit the audio.

Best Mobile Tools for Converting MP4 to MP3

If you want to convert on your phone, these apps are on the App Store. Ratings are the public App Store figures on 18 September 2026.

4. MP3 Converter -Audio Extractor

MP3 Converter -Audio Extractor by HappyTimes Tech Co., Ltd. converts video to MP3 on iPhone and iPad.

• Features: The listing mentions video to MP3 conversion, voice removal, an equalizer, bass boost and ringtone creation.
• Cost and Availability: Free with in-app purchases (VIP memberships listed from US$3.49 to US$15.99). Requires iOS 15.6 or later.
• Rating: 4.7 out of 5 from about 48,000 ratings. Some recent reviews complain about subscription charges, so check what you are signing up for.

5. Media Converter - video to mp3

Media Converter - video to mp3 is an iOS, iPadOS and Apple-silicon Mac app that converts video, audio and images.

• Support for Multiple Formats: The listing names MP4, MOV, 3GP, MKV, AVI, FLV, WebM, WMV and MPEG as video inputs, and MP3, M4A, WAV, FLAC, OGG, AAC, M4R and OPUS as audio outputs.
• Cost and Availability: Free with in-app purchases. Pro is listed at US$2.99 a month, US$9.99 a year or US$16.99 lifetime.
• Rating: 4.7 out of 5 from about 24,000 ratings.

We could not find the same app on Google Play. Android users can use the online tools below.

Best Online Tools for Converting MP4 to MP3

Online converters are handy when you cannot install software. They upload your file to someone else’s server, so skip them for private recordings.

6. Online Audio Converter

Online Audio Converter is a free web app that converts audio and extracts audio tracks from video.

• Batch Conversion: The site says it “can convert multiple files simultaneously in a batch, saving them in a ZIP archive”.
• Flexible Quality Settings: You can set quality, bitrate, frequency and number of channels.
• Privacy: The site says files are “automatically deleted from our servers a few hours after you are done working with them”.
• Limits: The page does not state a free file size limit. Premium accounts handle files up to 10 GB.

7. Convertio

Convertio is an online converter with an MP4 to MP3 page.

• Simple to Use: Upload your MP4, check that MP3 is selected, and click ‘Convert’. You can adjust the audio channels before converting.
• Supports Multiple File Sources: Files can come from your device, Google Drive, Dropbox or a direct file link (Convertio).
• Free with Premium Options: Convertio says free conversion works without an account, and its upload box shows a “1 GB maximum file size”. Paid plans start at US$6.99 a month billed yearly (Convertio pricing).

Removed from this list

Earlier versions of this page included ClipConverter, “Audio/Video Converter Android” and “MP4 to MP3 - Convert Video to Audio, Cut Ringtones”. We removed them on 18 September 2026. ClipConverter converts videos from YouTube and other sites by URL and sends local file uploads to a different service, so it does not convert your own MP4. We could not match the other two names to a single store listing.

How to Convert MP4 to MP3

Here is the process with VLC, which is free on every desktop platform:

• Install and Launch VLC: Download it from videolan.org and open it.
• Open the Converter: Go to Media, then Convert/Save.
• Add Your MP4 File: Click Add, select the MP4 file, then click Convert/Save.
• Choose Output Format: Pick the “Audio - MP3” profile.
• Convert and Save: Choose where to save the file, give it an .mp3 name, and click Start.

Practical Examples of MP4 to MP3 Conversion

Converting MP4 to MP3 has plenty of everyday uses:

• Creating Playlists from Concert Videos: If you recorded a concert, you can extract the audio to listen without the video.
• Language Learning: Learners can turn video lessons they have access to into audio clips for listening on the go.
• Turning Webinars into Podcast-Style Audio: If you missed a webinar and have the recording, converting it to MP3 lets you listen while commuting, working out or doing chores.

Understanding File Quality and Formats

When converting MP4 to MP3, a few terms decide the audio quality:

• Bitrate: The amount of data processed per unit of time, usually measured in kilobits per second (kbps). A higher bitrate generally means better audio quality but a larger file size.
• Lossy and Lossless Compression: MP3 uses lossy compression, which discards some data to make the file smaller. At higher bitrates the loss is often hard to hear. Lossless compression reduces file size without any loss in quality, but the files are much larger.

The MP3 can never sound better than the audio inside the MP4. For the best result, pick a bitrate at or above the source audio’s bitrate. Higher bitrates make larger files.

Legal and Ethical Considerations

Converting MP4 to MP3 is legal for files you own or have permission to use. Converting copyrighted content without permission can infringe copyright.

Fair use (in the US) allows some use of copyrighted material for purposes such as education, commentary or criticism. Simply converting a copyrighted file for personal use often does not qualify.

If the video came from a platform like YouTube, its terms of service apply too. Ask for permission when you need it, and use conversion tools responsibly.

Troubleshooting Common Issues in Conversion

Most conversions go smoothly. Here are fixes for common problems:

• Loss of Quality: Check your conversion settings. A higher bitrate often helps but makes a larger file.
• Slow Conversion Speeds: Speed depends on file size, your device, and your connection for online tools. If conversions are consistently slow, try a desktop tool like VLC.
• File Corruption: If the converted file does not play, the conversion may have been interrupted. Check your connection and convert the file again.

Future Trends in Audio and Video Formats

Audio and video formats keep changing:

• New Formats: Newer codecs promise better compression or quality at the same file size.
• Conversion Tools: Tools are getting faster and easier to use, and more of them add AI features such as noise reduction and transcription.
• Consumption Habits: Podcasts and audiobooks keep audio formats in demand.

Tool comparison

Conclusion

Converting MP4 to MP3 saves space, makes audio easier to carry around, and lets you listen to lectures, interviews and webinars without the video. For most people, VLC is the free desktop pick, Media Converter or MP3 Converter -Audio Extractor covers iPhone, and Online Audio Converter or Convertio covers the browser.

If what you want from the video is the words rather than the audio file, ScreenApp can extract the audio and transcribe it. Downloading the MP3 from ScreenApp needs a paid plan (see download access).

Use conversion tools responsibly, and respect the copyright of the people who made the content.