Video Converter
Convert any video file online for free with custom resolution, frame rate, and compression options.
or drag and drop files here
Max file size 1GB. Fast, secure, and encrypted.
Popular Video Conversions
Select one of the most frequently used video conversion pairs:
Convert MP4 to MP3 online with high fidelity.
Convert MOV to MP4 online with high fidelity.
Convert MKV to MP4 online with high fidelity.
Convert WEBM to MP4 online with high fidelity.
Convert AVI to MP4 online with high fidelity.
Convert MP4 to GIF online with high fidelity.
Convert MOV to GIF online with high fidelity.
Convert FLV to MP4 online with high fidelity.
Why Transcode Video Files on UConvert?
Lossless & High-Fidelity Transcoding
Our backend automatically preserves optimal codecs, bitrates, and color profiles without unwanted compression artifacts.
Universal Device & OS Compatibility
Works 100% in your web browser across Windows, macOS, Linux, iOS, and Android without downloading any executable software.
Military-Grade Security-256
All file transfers are protected with TLS 1.3 encryption. Uploaded and converted files are permanently deleted after 2 hours.
Batch Conversions & ZIP Archive
Queue multiple video files at once and download everything in a convenient ZIP archive with a single click.
How to Convert MP4 to MP3
Convert your files in 3 simple steps without installing any software.
Step 1: Upload MP4 to UConvert
Upload your MP4 file directly to UConvert's cloud dropzone by clicking "Choose Files" or dragging the file into the browser.
Step 2: Choose MP3 & Convert
Select MP3 as your target format, configure optional codec or bitrate parameters, and click "Convert" to initiate instant cloud transcoding.
Step 3: Download MP3 File
Download your converted MP3 file from UConvert instantly, or save all files in a single ZIP package with automatic 2-hour encrypted deletion.
Frequently Asked Questions
Essential technical facts about MP4 to MP3 conversion.