Convert MP4 to MP3 Online – Free & Unlimited

Convert MP4 to MP3 in Three Steps

01
Get a free Descript account and log in
Open a free Descript account and sign in. You’ll receive 1 free hour of transcription each month (no credit card needed) so you can try converting MP4 files to MP3 without hassle.
02
Start a new project and upload MP4
Start a project in Descript, then drag your MP4 into the workspace. We process it in the cloud for a quick conversion path.
03
Pick export options and save as MP3
To convert your MP4 to MP3, open Publish, select Export, choose MP3, then hit Save. It’s simple and quick—your audio is ready with minimal effort.

Convert your MP4 videos to MP3 audio fast

Detach audio from video files
Descript allows you to grab audio from video in a flash. Convert MP4 to MP3 for podcasts, voiceovers, or any other use. Simplify your workflow and maximize your content.
Convert videos to 60 FPS with ease
Increase your video quality with Descript’s 60 FPS option. Whether you convert MP4 to MP3 or fine-tune visuals, you get smooth HD playback. Finish like a pro without complicated apps.
Flexible export choices
Descript works with many export formats, making MP4 to MP3 conversion hassle-free. If you want top-grade audio or small files for fast sharing, pick exactly what you need.

More than a video converter

Descript is an AI-driven editing tool for audio and video that helps you tackle podcasts and videos with a text-first approach.

Transcription
Transcribe your MP4 while converting to MP3, capturing each word clearly.
Studio Sound
Elevate audio quality in your MP4 to MP3 conversions using Descript’s Studio Sound, giving each project a crisp finish.
Remove filler words
Easily cut filler words from your MP4 to MP3 sessions, creating a tidy, pro-level final track.
Text-based editing
Convert MP4 to MP3 in Descript’s text-based editor for straightforward extraction and editing.

Don’t just take our word for it

With a 4.6-out-of-5-star rating and a bunch of distinctions on G2, Descript’s users have declared it an industry standard in the video and podcasting world.

2025

Best Software

Video Editing

Text to Speech

Screen and Video Capture

“With Descript I'll be able to at least double my content output since editing is taking one-quarter the time it used to.”

Donna B.

“With Descript we can create videos for our YouTube channel and our LinkedIn page much faster and with high quality.”

Balázs N.

“Descript has made cleaning up and creating my educational videos into professional presentations [possible] without needing extensive technical computer skills.”

Barbara C.

“Descript makes recording and editing audio and video a breeze. It's advanced features have streamlined my workflows, saving me a lot of time usually spent editing.”

Roderick F.

“The collaborative tools streamline teamwork, allowing my team and me to work efficiently together on projects. Overall, Descript enhances productivity and simplifies the editing process.”

Aldrich M.

“Transcription based editing makes the process much faster…All in all, a must have editor for most audiences, especially in SaaS marketing.”

Nidhin M.

Surely there’s one for you

Free

no credit card required

Start your journey with text-based editing

Get started

1 transcription hour / month

Export 720p, with watermarks

Limited trial of Basic AI Actions

Limited trial of AI Speech

Hobbyist

$16

per person / month, billed annually

Elevate your projects, watermark-free

Get started

10 transcription hours / month

Export 1080p, watermark-free

20 uses / month of Basic AI Actions suite including Filler Word Removal, Studio Sound, Draft Show Notes, Create Clips, and more

30 minutes / month of AI speech with stock AI speakers and custom voice clones

5 minutes / month of avatars

Questions? We have answers

What audio quality can I expect when converting MP4 to MP3 using this tool?
When you convert MP4 to MP3 with Descript, expect clear audio that’s perfect for podcasts, music, and other projects. We maintain clarity all the way through.
Are there any limitations on the file size or duration for MP4 files when using the conversion tool?
No file duration or size caps apply here, so you can convert MP4 to MP3 online free unlimited. Hefty videos might need extra processing time, but that depends on your setup.
What pricing plans does Descript offer for users who need advanced features?
Descript provides several subscription options: a free plan with basic features, a Creator plan at $12/month, and a Pro plan at $24/month. Teams can opt for an Enterprise package at a custom rate.
Does Descript support collaboration features for team projects?
Yes. Descript supports real-time collaboration, so multiple users can edit, comment, and share assets together, simplifying teamwork on audio and video.

Convert Your MP4 to MP3

Convert MP4 to MP3 in Three Steps

Convert your MP4 videos to MP3 audio fast

More than a video converter

Surely there’s one for you

Questions? We have answers