AUDIO TOOLS
Audio Converter Online
Convert audio and video files to MP3, WAV or M4A, one or many at once.
Your files are processed on your device and are never uploaded.
Convert audio and video files to MP3, M4A (AAC) or WAV. Add one file or a whole batch, choose the format, bitrate, channels and sample rate, and download the converted files.
It reads almost anything your browser can play – MP3, WAV, M4A, AAC, OGG, Opus, FLAC, WebM, and the soundtrack of MP4, MOV and other videos.
Converting happens in your browser, so even large files and long batches need no upload.
How to Convert audio
- Add your files: Choose one or more files or drag them onto the box. Use Add more files to extend the list.
- Choose the format: MP3, M4A (AAC) or WAV (lossless).
- Set the quality: Bitrate for MP3 and M4A, plus channels and sample rate if you want to change them.
- Click Convert and download each file, or all of them together.
Which Format Should You Pick?
- MP3: Plays on every device, car stereo and app. The safe choice for sharing.
- M4A (AAC): Sounds better than MP3 at the same bitrate. Standard on iPhone, iTunes and Apple Music; also works on Android and Windows.
- WAV: Uncompressed and lossless. Best for editing and archiving, but about 10 MB per minute of stereo audio.
Choosing a Bitrate
| Bitrate | Size per minute | Good for |
|---|---|---|
| 32–48 kbps | 0.25–0.35 MB | Voice notes and calls (Mono) |
| 64 kbps | about 0.5 MB | Podcasts, lectures, audiobooks |
| 128 kbps | about 1 MB | Everyday music listening |
| 192 kbps | about 1.4 MB | High quality music |
| 320 kbps | about 2.4 MB | Best MP3 quality |
Mono halves the size of speech recordings with no loss in clarity. A sample rate of 44,100 Hz is CD quality; 48,000 Hz is the video standard; 22,050 Hz is enough for voice.
Free, Batch and Private
Convert as many files as you like – no sign-up, no watermark and no limit. Your audio and videos never leave your device. To trim a file before converting it, use Audio Cutter.
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