Audio Converter
Convert MP3, WAV, AAC, FLAC, OGG, and M4A, or pull the audio track out of a video file — pick an exact conversion or use the all-in-one converter.
All-in-One Audio Converter
Convert between MP3, WAV, AAC, FLAC, OGG, M4A, AIFF, and AMR — choose any target format.
Extract Audio from Video
Pull just the audio track out of a video file — the tool behind MP4 to MP3 and every other video-to-audio conversion.
MP4 to MP3
Pull the MP3 audio track out of an MP4 video file.
MOV to MP3
Pull the MP3 audio track out of a MOV video file, like footage recorded on an iPhone.
WAV to MP3
Convert uncompressed WAV audio into much smaller MP3 files.
MP3 to WAV
Convert MP3 files to uncompressed WAV audio for editing or production use.
About Audio Converter
A podcast platform wants MP3, an audio engineer wants lossless WAV, and a video's soundtrack often needs to become a standalone file entirely. This category covers every direction that conversion goes: pick a dedicated page like MP4 to MP3 for the most common conversions, or use the all-in-one Audio Converter for anything else. Every conversion, including pulling audio out of a video file, runs on a genuine FFmpeg build compiled to WebAssembly, directly in your browser.
Why use these tools
- Dedicated pages for the highest-demand conversions — like MP4 to MP3 — mean you land exactly where you need to, with the right output format already set.
- Extracting audio from a video file uses real stream demuxing, preserving the original audio quality rather than a lossy re-recording.
- The all-in-one Audio Converter covers less common pairs (FLAC, OGG, AIFF, AMR) beyond what a dedicated page targets.
- A genuine FFmpeg engine means real codec support and conversion quality matching installed desktop software.
Frequently asked questions
What's the difference between MP4 to MP3 and the all-in-one Audio Converter?
MP4 to MP3 is a focused page for the single most common conversion — pulling an MP3 audio track out of an MP4 video file. The all-in-one Audio Converter handles audio-to-audio conversion between eight formats (MP3, WAV, AAC, FLAC, OGG, M4A, AIFF, AMR), and Extract Audio from Video handles any other video source beyond MP4.
Can I convert a video file directly to an audio format?
Yes — MP4 to MP3, MOV to MP3, and Extract Audio from Video all pull the audio track out of a video file and save it as a standalone audio file, without needing to convert the video itself first.
Is my file uploaded to a server during conversion?
No. Every conversion runs locally using a real FFmpeg engine compiled to WebAssembly. Your file is never transmitted anywhere.
Does converting to MP3 reduce audio quality?
MP3 is a lossy format, so converting from a lossless source like WAV does involve some compression. At standard bitrates the difference is not generally noticeable during normal listening, though an audio engineer working on a mix may prefer to stay in a lossless format like WAV until final export.
Can I convert the other direction — audio back to a lossless format?
Yes, MP3 to WAV converts a compressed MP3 into uncompressed WAV audio, useful for importing into audio editing software that expects a lossless source, though it won't recover detail already lost during the original MP3 compression.