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Turn your MP3 into an MP4 with a cover image.

Upload a song and a picture, pick a resolution, and download a ready-to-post video. Perfect for YouTube music uploads, Instagram Reels, and TikTok — all done right in your browser, no account needed.

Drag & drop files here

Or click to browse (up to 100MB each)

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Free · No account · Files never leave your browser

Why use this MP3 to MP4 converter?

Any cover image

Drop in a JPG, PNG, or WebP as your video's artwork. Got album art embedded in the MP3 tags? The tool picks it up automatically and uses it unless you swap it out.

Every aspect ratio you need

Pick 1080p for YouTube, square 1080 for Instagram feeds, or vertical 1080 for Reels, Shorts, and TikTok. One MP3, any platform.

Fit, fill, or stretch

Choose how the cover image sits in the frame. Letterbox it with a custom background colour, crop it to fill the screen, or stretch it edge-to-edge — your call.

Everything stays on your device

The conversion runs entirely in your browser using WebAssembly. Your song and your image are never uploaded to a server, so nothing leaves your computer.

Free with no watermark

No trial limits, no paid tier, no logo stamped in the corner. The MP4 you download is yours to post anywhere — clean and unbranded.

Preview before you download

Watch the generated MP4 inline before saving it. If the framing is off or the background colour looks wrong, tweak and re-run in seconds.

Why you might need to convert an MP3 to an MP4

The YouTube upload that almost wasn't

You've just finished recording your first original song. Months of late nights, tweaking the mix on headphones until it sounded right in every room of the house. Now you want to share it with the world — and naturally, you go to YouTube. Except YouTube won't accept an MP3. It wants a video file.

You start looking for a way to make a "video" out of an audio file. The pro tools want a subscription. The free ones either slap a watermark across the corner, force you to sign up, or convert so slowly that you give up twice before it finishes.

You drop your MP3 into the converter, upload the cover art you designed in your photo editor, pick 1080p, and hit Convert. A minute later, you've got an MP4 file — just your artwork, held steady for the length of the track, with crystal-clear AAC audio underneath. You upload it to YouTube, write a short description, and your song goes live. Your first ever release. No watermark. No sign-up. No fuss.

The podcast clip for Instagram

You host a weekly podcast, and this week's episode has a particularly good forty-second moment you want to share. Your podcast app lets you export the clip as an MP3, but Instagram won't let you post an audio file. You need a video — square, so it fills the feed, with your podcast's logo as the cover.

You could open a full video editor, import the clip, drop a still image onto the timeline, render it out — that's forty minutes of fiddling for a forty-second clip. Instead, you drop the MP3 into the converter, upload your podcast logo, pick "Square — 1080 × 1080", and let it run. Under a minute later, you've got an MP4 ready for Instagram. You post it, tag the guest, and the clip pulls in new listeners through the night.

The wedding slideshow's missing piece

Your best friend is getting married in six weeks and you offered to put together the slideshow for the rehearsal dinner. You've collected photos from every corner of her life, and you want to play her favourite song — an obscure cover you found on Bandcamp, bought as an MP3 — underneath it. The slideshow software you're using only accepts video files and images, not raw audio.

You upload the MP3, pick a plain black background, set fit to "Fit" with the original Bandcamp cover art, and convert. The resulting MP4 drops straight into your slideshow as the opening track. On the night, the room goes quiet when her song starts playing, and you catch her wiping her eyes before the first photo even fades in. Worth the six weeks.

1

Upload your MP3

Drop the song into the page, or pick it from your device. MP3, WAV, M4A, and AAC all work.

2

Pick a cover image

Upload a JPG, PNG, or WebP for the video's artwork. If your MP3 already has embedded album art, it's used automatically.

3

Download your MP4

Choose a resolution, hit Convert, preview the result, and save the MP4 to your device.

  • Your MP3 and image never leave your browser — there's nothing to delete.
  • Conversion runs entirely on your device. We never see, store, or transmit your files.
  • No sign-up, no email, no cookies. Just upload and convert.