Format Converter
FFmpeg PoweredConvert between MP3, WAV, OGG, M4A, FLAC
Drag & drop files here, or click to select
Supports MP3, WAV, OGG, M4A, FLAC and other common formatsHow to Use
- Click the area above to select a file, or drag and drop a file onto the page
- Adjust parameters in the settings area
- Click the process button and download the result when ready
Frequently Asked Questions
How It Works
The Audio Format Converter uses FFmpeg WebAssembly with codec-specific encoders to transform audio files between formats. The tool supports MP3 (libmp3lame), WAV (PCM), OGG (libvorbis), AAC (libfdk_aac), and FLAC (libflac) output formats.
The conversion pipeline: (1) The input file is demuxed to extract the raw audio stream. (2) The audio is decoded to PCM (raw samples) regardless of the source format. (3) The PCM data is resampled if the target sample rate differs from the source. (4) The resampled audio is encoded using the target codec with your specified bitrate and channel settings.
For lossless formats (WAV, FLAC), the conversion is essentially a container change with no quality loss. For lossy formats (MP3, OGG, AAC), the re-encoding introduces generation loss proportional to the target bitrate. The tool supports sample rates from 8kHz to 48kHz and bitrates from 32kbps to 320kbps.
Tips & Best Practices
- MP3 at 192kbps is the sweet spot for most use cases — perceptually indistinguishable from higher bitrates for most listeners.
- WAV to MP3 conversion is the most common use case. Use 320kbps if the audio will be used in professional production.
- AAC is superior to MP3 at the same bitrate — choose AAC when the target platform supports it (Apple ecosystem, modern web browsers).
- FLAC for archival: Convertprecious recordings to FLAC for lossless compression that saves 40-60% space versus WAV.
- Avoid double encoding: Don't convert MP3→OGG→MP3 — each step degrades quality. Convert from the highest quality source available.
- Check sample rate: Music is typically 44.1kHz, speech can be 22kHz or 48kHz. Match the target to the intended use.
Use Cases
Podcast producers converting WAV recordings from DAW exports to MP3 for distribution on Apple Podcasts, Spotify, and RSS feeds.
Music streaming services requiring specific format submissions — converting lossless masters to required bitrates and formats. Web developers converting audio assets to OGG for Firefox/Chrome and AAC for Safari for cross-browser compatibility. Voice message platforms converting high-quality voice recordings to compressed formats for messaging app sharing. Audiobook producers converting from studio-quality WAV to distribution-ready MP3 at specific bitrates. Ringtone creators converting music files to the format required by their mobile device.