Free Audio Tools
One tool so far, for the job people most often need done to a sound file: converting it. MP3, WAV, FLAC, OGG and M4A in either direction, a bitrate you choose, and a video dropped on it gives back just its audio. Decoding and encoding happen in your browser, so a recording never leaves your device and there is no size limit beyond its memory.
What the one tool here does
The audio converter takes a sound file in any common format and writes it out in another. The usual reasons are a WAV that is too large to send, an M4A from a phone that a website refuses, a FLAC that a car stereo will not play, or a lecture recorded as video where only the sound matters. Drop the file, pick the format and bitrate, download. Several files at once are fine; they are converted one after another.
The quality question is the one worth a minute. WAV and FLAC keep every sample, so converting between them is exact. MP3, OGG and M4A discard what their encoder decides you will not hear, and each pass through a lossy format discards a little more, so convert from the best original you have rather than from an MP3 you converted last week.
What this category will not do for you
Nothing here edits sound. There is no trimming, no volume change, no noise removal, no joining of files; the converter changes the container and the codec and leaves the audio itself alone. Tags do not come across either: title, artist and cover art have to be added again afterwards. And the formats a file can be read from depend on the decoders your browser ships, which is why a few AAC files refuse to open on some Linux builds while the same files convert fine in Chrome or Safari elsewhere.
Frequently asked questions
Are my audio files uploaded to convert them?
No. The converter runs inside your browser, using its built-in decoders and a small encoder library fetched from this site the first time you use it. The converted file is written on your device, which you can confirm by watching the Network tab of the developer tools while it works.
Which audio format should I convert to?
MP3 when the file has to open anywhere, at 192 kbps unless size matters more. FLAC to keep every sample at about half the size of WAV, for archiving or for someone who will edit it. WAV only when a program or form demands it, since it is the largest. OGG (Opus) sounds best per kilobyte but older players may not open it.
Does converting an MP3 to FLAC or WAV improve the sound?
No. The detail an MP3 discarded is gone, and a lossless copy of it is simply a larger file with the same sound. Lossless formats are worth it only when the source is lossless too, such as a CD rip or a studio recording.
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