What is MP3?
MP3 is the most widely supported audio format, playable on almost every device, editor and upload form.
All tools
MP3 to MP4 converter with cover image
Convert MP3 to MP4 for free, right in your browser. Drop a file, wait a few seconds and download. Add an optional cover image so the video is ready for YouTube, TikTok or Instagram.
MP3 to MP4 Converter
Convert MP3 to MP4 right in your browser. Files never leave your device, so there is no upload wait and no size queue.
Optional cover image
Shown for the whole video. Leave empty for a black frame.
Drop your MP3 file or tap to choose
Up to 1 GB. Converted on your device.
Tool details
How to convert MP3 to MP4
- 01
Drop your MP3 file
Drag it onto the box or tap to pick it from your device.
- 02
Let it convert
Your browser decodes the audio and re-encodes it. A progress bar shows how far along it is.
- 03
Download the MP4
Preview it on the page, then download the new file with the same name as the original.
About this tool
Why convert to MP4?
An MP4 with a still image lets you upload audio to YouTube, TikTok or Instagram, which only accept video files.
Private by design
Most online converters upload your file to their servers. This one does the work locally, so recordings of meetings, interviews or unreleased music never leave your computer or phone.
Frequently asked questions
How do I upload an MP3 to YouTube?
YouTube only accepts video. Add a cover image here, convert the MP3 to MP4 and upload the MP4. The image shows for the whole length of the audio.
What does the video look like without a cover image?
It is a plain black 1280 x 720 frame with your audio. Adding album art, a podcast cover or a thumbnail makes it look far better in feeds.
Is my MP3 file uploaded anywhere?
No. The conversion runs inside your browser on your own device. Your file is never sent to FacelessGenie or any server, which also means there is no upload wait.
Is there a file size limit?
You can convert files up to 1 GB. Very long files take longer because your device does the work, but the page shows progress while it runs.
Which browsers work?
Recent versions of Chrome, Edge and Safari handle every format here. Firefox works for most audio files. If a file will not open, try Chrome or Edge, which support the widest range of MP4 encoding.