A voice memo, a WAV recording, an M4A from a phone, an OGG or FLAC file that some app refuses to play — most online converters ask you to upload it to a server first. This one doesn't. The conversion happens right in your browser, on your own device.
Open the converter →A lot of the audio people convert isn't public — a voice note, a meeting recording, a demo track. Sending it to a stranger's server for a few seconds so it can be "converted" is a habit worth breaking when it doesn't have to happen at all. If the conversion runs on your own device, the file simply never leaves it.
Your browser decodes the audio file directly and re-encodes it to MP3 using code that runs locally, the same way a desktop audio app would. No upload, no waiting on someone else's queue. You can convert several files in one go, and you can pick the output bitrate yourself.