Convert audio files between MP3 and WAV formats. Works instantly in your browser — no upload, no account needed.
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Choose Audio FileMP3, WAV, OGG, M4A · Max 30MB
Converting your audio...
This tool converts audio files between formats — currently supporting conversion to MP3 (compressed, smaller files) and WAV (uncompressed, exact quality) — directly in your browser. Upload an audio file in any format your browser can play, choose your target format, and download the converted result.
Conversion happens entirely in your browser using the Web Audio API to decode the original file, and a JavaScript-based encoder to produce the output — your audio is never uploaded to a server.
MP3 is a compressed format that significantly reduces file size by removing audio data the human ear is less sensitive to. It's the most widely supported format for music, podcasts and general sharing. WAV is uncompressed — files are much larger, but no audio data is lost, making it the better choice if you plan to edit the audio further (since each editing pass on a compressed format can introduce additional quality loss) or if a specific application requires uncompressed audio.
Bitrate determines the trade-off between file size and quality for MP3. 128kbps is a common baseline that sounds acceptable for casual listening and speech. 192kbps offers noticeably better quality for music with a moderate size increase. 320kbps is close to the practical maximum for MP3 and is appropriate when quality matters most, such as music you intend to keep long-term.
It might seem counterintuitive to convert a file to a larger format, but there are good reasons to convert to WAV specifically. If you've received an audio file in a compressed format and plan to run it through several editing steps — trimming, merging, adjusting speed, removing silence — converting to WAV first means each of those steps works with uncompressed data, avoiding the small quality losses that can accumulate if each step re-encodes an already-compressed format. Once all your edits are done, converting the final result back to MP3 (or another compressed format) for sharing or storage gives you the editing quality benefit of WAV during the process, with the file size benefit of MP3 for the final output. This "edit in WAV, deliver in MP3" approach is a common practice for exactly this reason.
This tool converts to MP3 and WAV specifically because these two formats cover the vast majority of practical needs — MP3 for compressed, widely-compatible sharing, and WAV for uncompressed editing-quality audio. Other formats (such as FLAC, AAC, or OGG) each have their own particular strengths — FLAC offers lossless compression at smaller sizes than WAV, for example — but supporting every format adds complexity without addressing a need that MP3 and WAV don't already cover for most users. If your source file is in one of these other formats, this tool can still read it (since browsers can decode many audio formats for playback) and convert it to either MP3 or WAV as the output.
If you need to trim the converted file to a specific section, our Audio Trimmer can cut it down. If the file is still too large for your needs, Audio Compressor can reduce it further.
You can convert to MP3 or WAV. Input can be most common audio formats your browser supports, including MP3, WAV, OGG and M4A.
Converting to WAV preserves quality exactly. Converting to MP3 involves compression at the chosen bitrate, though 128kbps and above is generally fine for most listening.
Files up to 30MB are supported, with the practical limit also depending on your device's available memory.
No, conversion happens entirely in your browser using the Web Audio API and a JavaScript MP3 encoder.
No, everything runs directly in your browser with no installation or account required.