Audio Converter
Convert audio files between MP3, WAV, FLAC, OGG, AAC, and M4A.
About Audio Converter
Audio arrives in whatever format the source happened to use — a FLAC rip that your car stereo refuses to play, a WAV master too big to email, an OGG file your editing software won’t open. This free audio converter changes files between MP3, WAV, FLAC, OGG, AAC, and M4A online, with no sign-up, no watermark, and nothing to install. Upload a file up to 200 MB, pick the target format and a quality preset, and download the converted audio in seconds.
Conversion runs on ffmpeg, the same engine behind professional audio pipelines, so every format is encoded with the right codec at sensible settings. Four quality presets — Low, Medium, High, and Lossless — let you choose between small files and full fidelity: MP3 ranges from 128 to 320 kbps, AAC and M4A from 96 to 256 kbps, while WAV and FLAC are always lossless. The tool detects your input format automatically and shows the before-and-after file sizes, so converting a FLAC album track to MP3 or turning a voice memo into a WAV for editing takes a few clicks.
How to convert an audio file online
- 1Drag and drop your audio file into the upload zone, or click it to browse — files up to 200 MB are supported.
- 2Check the detected input format shown under the filename, then pick a different Output Format: MP3, WAV, FLAC, OGG, AAC, or M4A.
- 3Choose a Quality preset — Low, Medium, or High for compressed formats, or Lossless when converting to WAV or FLAC.
- 4Click Convert and wait a few seconds while ffmpeg re-encodes the audio.
- 5Compare the original and output file sizes on screen, then click Download to save the converted file.
Frequently asked questions
Which audio formats can I convert between?
Six formats in any direction: MP3, WAV, FLAC, OGG, AAC, and M4A. The tool detects your input automatically and simply disables it in the output list, so you always end up with a genuinely different format.
Will converting reduce my audio quality?
Converting to WAV or FLAC is lossless — nothing is discarded. Converting to MP3, OGG, AAC, or M4A is lossy, and the High preset keeps that loss inaudible for most listeners. The one thing to avoid is repeatedly converting between lossy formats, since each generation discards a little more detail; convert from the original source whenever you can.
What quality preset should I choose?
Medium is a sensible default for speech and casual listening. Choose High (320 kbps MP3, 256 kbps AAC) for music, and Low when the smallest possible file matters most. Lossless is available when the output is WAV or FLAC, which preserve the audio bit-for-bit.
Is there a file size limit?
Yes — audio files up to 200 MB are supported, which covers hours of compressed audio or a full-length lossless album track.
Are my audio files stored on your servers?
No. Your upload is written to a short-lived temporary file so ffmpeg can process it, and both the original and the converted file are deleted from the server as soon as your download has been delivered. Nothing is kept, logged, or shared.
Is this audio converter free?
Yes — completely free, with no sign-up, no watermarks, and no daily limits beyond fair-use rate limiting.
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