Audio Converter
Convert M4A, OGG, WAV, FLAC or WebM audio to MP3 or WAV with your choice of bitrate, channels and sample rate.
About Audio Converter
This audio converter online changes almost any audio file your browser can play into MP3 or WAV. Convert M4A to MP3 from iPhone recordings, WAV to MP3 to save space, OGG or OPUS voice notes to MP3, or MP3 to WAV for editing software. You can also drop a video to take its sound.
Choose the bitrate, mono or stereo and the sample rate to balance quality and file size. Conversion happens in your browser, so your recordings are never uploaded, and it is free with no sign-up. It does not convert speech to text; it only changes the audio format.
How to use Audio Converter
- Drop any audio file your browser can play (or a video to take its sound).
- Pick MP3 or WAV, bitrate, mono/stereo and sample rate.
- Click Convert and download the result.
Frequently asked questions
Which input formats work?
Anything your browser can decode: MP3, WAV, M4A/AAC, OGG/Opus, FLAC and WebM work in Chrome and Edge. Safari and Firefox support most of them too.
Can it convert WhatsApp voice notes (.opus/.ogg)?
Yes in Chrome, Edge and Firefox. Safari may not decode Opus in an OGG container.
Does converting MP3 to WAV improve quality?
No. It makes an uncompressed copy that is easier to edit, but detail lost in the MP3 cannot come back.
How do I convert M4A to MP3?
Drop the M4A file, choose MP3 and a bitrate such as 192 kbps, click Convert and download the MP3.
How do I convert WAV to MP3 without losing much quality?
Pick MP3 at 256 or 320 kbps. The file becomes much smaller and the difference is hard to hear for most music and speech.
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