Convert audio between MP3, WAV, OGG, AAC, FLAC, and AIFF formats using the Web Audio API, with no uploads and no server processing.
Audio format conversion is a routine task in music production, podcasting, game development, and content creation. The right format depends on how the audio will be used: WAV and AIFF for editing, MP3 and AAC for distribution, OGG for web and open-source platforms, FLAC for lossless archiving.
All conversion in this collection runs entirely in your browser using the Web Audio API and WebAssembly encoders. Files are decoded and re-encoded locally on your device. Nothing is uploaded to any server.
A note on quality: converting from a lossy format such as MP3 or AAC to WAV does not restore audio data that was discarded during the original encoding. The WAV file will have the same audio quality as its source, but stored in an uncompressed container. For true lossless conversion, use FLAC or WAV as the source. Converting between two lossy formats (e.g., MP3 to OGG) applies a second round of lossy encoding, which is best avoided when quality is a priority.
Step-by-step guidance and best practices for getting the most out of this collection
Audio formats differ in how they store audio data and which use cases they are suited for.
WAV (Waveform Audio File Format) stores audio as raw, uncompressed PCM data. Every sample is preserved exactly as recorded. A minute of CD-quality stereo audio in WAV format is approximately 10 megabytes. WAV is universally supported across all operating systems, digital audio workstations, and hardware devices, making it the standard working format for audio editing, mixing, and mastering.
MP3 uses perceptual audio coding to reduce file size, discarding frequency content below the threshold of human hearing. At high bitrates (192 kbps and above), the difference from the original is generally imperceptible. MP3 is supported by every device and platform without exception, making it the safest choice for distribution. Because re-encoding a lossy file introduces additional quality loss, MP3 is best used as a final delivery format rather than an intermediate editing format.
AAC (Advanced Audio Coding) is the technical successor to MP3. It achieves noticeably better quality at equivalent bitrates, particularly below 128 kbps. AAC is the default audio codec for Apple Music, iTunes, YouTube, and most modern streaming services. It is well supported across Apple devices, Android, and browsers.
OGG Vorbis is an open-source, patent-free codec that generally outperforms MP3 at equivalent bitrates. It is the preferred format for HTML5 web audio, Linux distributions, and open-source gaming platforms. Hardware support is less universal than MP3 or AAC.
FLAC (Free Lossless Audio Codec) compresses audio without discarding any data. A FLAC file can be decoded back to the identical PCM stream as the source, making it the format of choice for archiving music collections at reduced file size compared to WAV. FLAC files are typically 40–60% smaller than their WAV equivalents.
AIFF (Audio Interchange File Format) is Apple's uncompressed audio container, equivalent to WAV in quality but using a different file structure. AIFF is common in professional audio workflows on macOS. Converting to WAV improves compatibility with non-Apple software.
Convert compressed audio to uncompressed WAV for editing and production
Decode MP3 to uncompressed WAV
Decode AAC to uncompressed WAV
Decode OGG Vorbis to uncompressed WAV
Convert FLAC lossless audio to WAV
Convert AIFF to WAV for cross-platform compatibility
Encode audio to MP3 for broad device and platform compatibility
Encode WAV to MP3 for distribution
Convert AAC to MP3 for wider device support
Convert FLAC lossless audio to MP3
Convert AIFF to MP3 for cross-platform distribution
Convert OGG Vorbis to MP3 for broader compatibility
Encode audio to AAC for Apple devices, Android, and streaming platforms
Encode WAV to AAC for streaming and mobile
Convert MP3 to AAC format
Convert FLAC lossless audio to AAC
Convert OGG Vorbis to AAC format
Convert AIFF to AAC for Apple and streaming platforms
Encode audio to OGG Vorbis for web, games, and open-source platforms
Encode WAV to OGG Vorbis
Convert MP3 to OGG Vorbis format
Convert AAC to OGG Vorbis format
Convert FLAC lossless audio to OGG Vorbis
Convert AIFF to OGG Vorbis format
Common ways professionals use these tools together
Convert your source audio file to WAV
MP3 to WAV / AAC to WAV / FLAC to WAV
Edit the WAV file in your audio editor or DAW
Audio Trimmer / Audio Merger
Export the finished edit to your target distribution format
WAV to MP3 / WAV to AAC / WAV to OGG
Convert MP3 or AAC files to WAV to remove lossy container overhead
MP3 to WAV Converter
Re-encode the WAV files to FLAC using an audio editor
External audio editor (Audacity, etc.)
Convert your source audio to OGG for open-source browsers
WAV to OGG / MP3 to OGG
Convert the same source to AAC as a fallback for Safari and iOS
WAV to AAC / MP3 to AAC
Everything you need to know about audio format converters
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