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Extract audio from video MP4 to MP3, free

By ShinobiTools Team · Last updated: August 2026

Drop a video in and get the sound out of it as an MP3 — free, no account, no watermark. Works on MP4, MOV, MKV and WEBM, up to an hour.

What comes back

One MP3 with the sound from your video and nothing else. It plays in the box above before you download it, so you can hear that you got the right file.

How to extract audio from a video
  1. Drop your video in the box above, or click it and pick the file.
  2. Wait a few seconds — an hour of video takes about half a minute.
  3. Play it back to check, then download the MP3.
  4. Want more than the plain audio? The links under the result split it into vocals and instrumental, or turn the speech into text.
On a phone: iPhone and Android

This runs in the browser, so there is nothing to install on either. On an iPhone, tap the box, choose Photo Library for a clip you filmed or Browse for a file in Files; the MP3 lands in Downloads and you can move it into Files or share it straight into another app. On Android it's the same flow through the file picker. Note that iPhones record in HEVC/MOV — that's fine here, the sound comes out the same way.

Why we don't take a YouTube link

Half of what people search for around this is "from a YouTube link", and plenty of sites offer it. We don't, on purpose: pulling a file off someone else's server is a different thing from converting a file you already have, and it's the part that gets those sites taken down. Bring a video you filmed, recorded, bought or own the rights to and everything here works. If the audio is a song and you want the parts out of it, that's what the rest of StemGrab is for.

One more practical difference: because your file never leaves your control except for the few seconds it takes to convert, there's no queue, no daily limit and nothing to sign up for.

What to do with the MP3 afterwards

Getting the audio out is usually step one. From the same file you can take the vocals out to get a backing track, keep only the voice, read its key and BPM, or move it up or down in pitch. If it's someone talking rather than music — a lecture, an interview, a meeting recording — ScribeGrab writes it out as text with timestamps.

Common questions

Is it really free, with no limit?

Yes — no account, no e-mail, no daily cap and no watermark. The only limit is a file up to about 100 MB and an hour long, because that's what fits through in one go.

What formats can I put in?

MP4, MOV, MKV, WEBM and AVI on the video side, and M4A, AAC, WAV, FLAC or OGG if you just want a different audio format. You always get an MP3 back.

Does the quality drop?

A little, unavoidably: video audio is already compressed, and MP3 compresses again. We encode at high-quality VBR (roughly 190 kbps), which nobody hears the difference on. If you need it lossless, this isn't the tool.

Can I do it on my iPhone?

Yes. Tap the upload box, pick the clip from your photo library or Files, and download the MP3 when it appears — nothing to install.

Can I paste a YouTube link?

No, and that's deliberate — see the section above. Upload a file you already have instead.

My video has no sound at all — what now?

You'll get a plain message saying so instead of an empty MP3. That usually means the recording was muted, or the app that made it saved a video-only file.

Is my upload stored?

No. Your upload is deleted the moment it's processed and the stems are wiped from the server within 45 minutes. Nothing is stored, shared or used to train anything — see privacy.