Free Online Audio Converter & Editor
Convert, trim, merge and enhance any audio file - right in your browser. Private, fast and free.
Drop audio or video files here
MP3, WAV, FLAC, M4A, OGG, OPUS, AAC, AIFF, WMA, AMR, MP4, MOV & more ยท Processed on your device - nothing is uploaded
Popular conversions
Audio tools
Why people use Audio Converter Online
- Private by design. Your audio is processed on your device and never uploaded.
- Fast. No upload or download queue - conversion starts instantly.
- 20+ formats. Every common audio format, plus audio from video files.
- Real editing tools. Waveform editor, 20+ effects, presets and per-section effects.
- Batch, merge & mix. Convert many files at once, join them, or layer voice and music.
- Works everywhere. Windows, Mac, Linux, iPhone, Android and Chromebook.
Frequently asked questions
Is Audio Converter Online free?
Yes. Converting, trimming, merging and 20+ effects are free with no sign-up and no watermark. Pro is an optional subscription that adds advanced tools like noise reduction, a vocal remover, loudness normalisation, unlimited batch conversion and hi-res export.
Are my files uploaded to a server?
No. Files are converted and edited inside your web browser on your own device, so they never leave your computer or phone. We never upload or store your audio.
Which audio formats can I convert?
You can convert between MP3, WAV, FLAC, M4A (AAC), OGG Vorbis, OPUS, AAC, AIFF, ALAC, WMA, AC3, WEBM, M4R (iPhone ringtone), MP2, WavPack, AU and CAF. You can also open AMR, APE and extract audio from MP4, MOV, MKV, AVI, WEBM and other video files.
Can I edit audio before converting?
Yes. Open any file in the editor to trim, cut, split, fade, reverse or normalise it, change speed and pitch, apply EQ, reverb, echo, compression, 8D and lo-fi effects - and you can apply different effects to different parts of the same file.
Does converting reduce quality?
Converting to a lossless format (WAV, FLAC, ALAC, AIFF) preserves quality exactly. Converting to a lossy format (MP3, M4A, OGG, OPUS) reduces file size; choose 256-320 kbps for near-transparent quality.
Does it work on iPhone and Android?
Yes. The converter runs in any modern browser on iPhone, iPad, Android, Windows, Mac, Linux and Chromebook. You can also install it as an app from your browser menu.
Go further with Pro
Noise reduction, vocal remover, LUFS loudness, unlimited batch, hi-res export and tag editing.