How this WAV converter works
Drop in an MP3, OGG, M4A, FLAC or any other file your browser can play. The tool decodes it to raw PCM with the Web Audio API, shows you the duration, sample rate and channel layout, then writes a standard 16-bit WAV file on your device. Optionally it mixes stereo down to mono by averaging the channels, or resamples to a target rate through an offline audio renderer — useful when a transcription service or an old sampler insists on a specific format.
Be ready for the size: WAV is uncompressed, so a 4 MB MP3 typically becomes a 40 MB WAV. That is not a bug — lossless PCM simply stores every sample verbatim, which is exactly why WAV opens everywhere and survives any number of edits without generational loss.
When mono and 16 kHz make sense
For voice recordings, stereo and high sample rates are wasted bytes. Speech-to-text engines are almost universally trained on 16 kHz mono; converting a stereo 44.1 kHz recording to that format cuts the WAV to roughly a fifth of the size with no practical loss for spoken content. For music, keep the original rate and channels — resampling music downward audibly discards high frequencies.
Converting versus editing
This page converts the whole file as-is. If you only need part of it, cut the section first with the Audio Trimmer — it exports WAV too, so there is no need to convert afterwards. And if you are starting from scratch rather than from a file, the Voice Recorder captures straight from your microphone.