You have an MP4 — a music video, a lecture recording, a podcast episode someone sent as video — and you only want the audio. Converting MP4 to MP3 strips the video track and keeps a clean, portable audio file you can play anywhere.

Most online converters make you upload the whole video to their server, wait in a queue, and accept a file-size cap. Convertify does it differently: the conversion runs inside your browser, so nothing is uploaded and there is no size limit.

Quick answer

Open the video tool, drop your MP4, choose MP3 as the output, click convert, download. Done.

No account, no watermark, no upload.

Step-by-step

Go to getconvertify.me/video.
Drag your .mp4 onto the drop zone (or tap to pick it).
In the format dropdown, select MP3.
Press Convert. A progress indicator shows the FFmpeg engine working locally.
Press Download (or Share on mobile) to save the MP3.

Why convert MP4 to MP3?

Smaller files — audio-only is a fraction of the video size, easier to store and send.
Play anywhere — every phone, car stereo, and music app supports MP3.
Podcasts & lectures — keep the talk, drop the wasted video bitrate.
Music — pull a track from a concert clip or music video.

Is it safe to convert MP4 to MP3 online?

With Convertify, yes — because there is no "online" step for your file. The MP4 is decoded by FFmpeg compiled to WebAssembly running in your own browser tab. Your video never touches a server, so there is nothing to leak, log, or sell.

Quality and bitrate

Convertify encodes MP3 at a sensible default bitrate that keeps speech and music clear while keeping the file small. For a 5-minute clip you typically get a few megabytes instead of tens of megabytes of video.

Works on every device

Because it is browser-based, the same tool works on Windows, macOS, Linux, Android, and iPhone. On mobile the converted file is saved through the native share sheet so you can drop it straight into Files or Music.

Common questions

Does it keep the full audio length? Yes — the entire audio track is extracted, nothing is trimmed.

Is there a file size limit? No. Large files are limited only by your device's memory, not by a server quota.

Do I need to install anything? No. It is a website. Bookmark getconvertify.me and it works offline after the first visit.

Ready? Convert your MP4 to MP3 now →