Audio Converter

This audio converter processes your audio files entirely within your web browser using the Web Audio API and, where available, WebAssembly-compiled audio codecs like FFmpeg. No files are uploaded to any server — all encoding, decoding, and format conversion happens locally on your device.



When you select an audio file, the browser's built-in audio decoder reads the file into a raw audio buffer — an uncompressed representation of the sound as floating-point sample values. This raw audio data is format-agnostic: once decoded, the original format (MP3, WAV, OGG, etc.) no longer matters.



To produce the output file, the tool encodes the raw audio buffer into your chosen target format. WAV output is straightforward — the raw samples are written with a WAV file header containing metadata like sample rate, bit depth, and channel count. For compressed formats like MP3 or OGG, the tool uses audio encoding libraries compiled to WebAssembly that apply perceptual audio compression algorithms. These algorithms analyze the audio to identify frequencies that human ears are less sensitive to and reduce their precision, achieving significant file size reduction with minimal perceptible quality loss.



You can control the output bitrate, which determines the tradeoff between file size and audio quality. Higher bitrates preserve more audio detail but produce larger files.

1. Podcast Production
Podcast producers convert between formats for different distribution channels. Recording in high-quality WAV, then converting to MP3 at 128-192 kbps for distribution, balances audio quality with download size. Different podcast platforms may prefer specific formats or bitrate settings.



2. Music & Audio Editing Workflow
Musicians and audio engineers export recordings from DAWs in uncompressed formats (WAV, AIFF) and need to convert to compressed formats for sharing, streaming, or uploading to music platforms. Converting a 50MB WAV file to a 5MB MP3 makes sharing via email or messaging practical.



3. Web Development
Web developers need audio files in web-friendly formats (MP3, OGG, WebM Audio) for embedding in websites. Different browsers support different formats, so providing multiple format versions of the same audio ensures cross-browser compatibility. Converting to lower bitrates also improves page load performance.



4. Voice Recording & Dictation
Voice recorders and dictation apps often save in proprietary or uncommon formats. Converting these recordings to universally compatible formats like MP3 or WAV ensures they can be opened, edited, and archived using any standard audio software on any operating system.



5. Mobile Device Compatibility
Some audio formats are not natively supported on all mobile devices or car audio systems. Converting files to widely supported formats like MP3 ensures playback compatibility across smartphones, tablets, car stereos, and portable media players without requiring special apps.

• Choose the right bitrate for your use case: For speech and podcasts, 96-128 kbps MP3 is sufficient. For music listening, 192-256 kbps provides good quality. For archival or professional use, 320 kbps MP3 or lossless WAV preserves maximum quality.



• Understand lossy vs. lossless: Converting between lossy formats (MP3 to OGG) re-encodes already compressed audio, causing additional quality loss. If you have the original lossless source, always convert from that rather than from another lossy format.



• Use WAV for editing, MP3 for sharing: Keep your working copies in uncompressed WAV format to preserve full quality during editing. Only convert to compressed formats as the final step when preparing files for distribution.



• Match sample rate to content type: 44.1 kHz is the standard for music (CD quality). 48 kHz is standard for video audio. 22.05 kHz is acceptable for speech-only content and produces smaller files.



• Check mono vs. stereo needs: Podcasts, voice recordings, and phone audio work fine in mono, which halves the file size. Music and sound effects typically need stereo to preserve spatial information.



• Verify output quality: After converting, listen to the output file, especially at quiet passages and high-frequency sections, to confirm acceptable quality. Artifacts from compression are most noticeable in cymbals, sibilance, and quiet fade-outs.