Drop an audio file here
or click to browse · MP3, WAV, OGG, FLAC, AAC, M4A…
About
The Audio File Info tool analyses an audio file and displays its key technical metadata: total duration, sample rate (in Hz), number of channels (mono/stereo), approximate bitrate (kbps), MIME type, and file size. It uses the browser's built-in audio decoding so it works with any format your browser supports — MP3, WAV, OGG, FLAC, AAC, M4A, and Opus.
How to use
- 1 Drag and drop an audio file onto the upload area, or click to browse.
- 2 The tool analyses the file locally — no data is uploaded to any server.
- 3 Duration, sample rate, channels, and bitrate are displayed instantly.
- What sample rate should audio be recorded at?
- 44,100 Hz (44.1 kHz) is the standard for CD-quality audio and most music distribution. 48,000 Hz (48 kHz) is the standard for video and broadcast. 96,000 Hz and 192,000 Hz are high-resolution formats used in professional recording studios. For most listening and streaming purposes, 44.1 kHz or 48 kHz is ideal — higher sample rates offer diminishing returns for consumer playback.
- What is audio bitrate and how does it affect quality?
- Bitrate is the amount of data used per second of audio, measured in kilobits per second (kbps). For MP3, 128 kbps is acceptable, 192 kbps is good, and 320 kbps is considered near-lossless for most listeners. For AAC/Opus (more efficient codecs), 128 kbps sounds equivalent to MP3 at 192 kbps. WAV and FLAC are lossless — their bitrate is much higher (typically 1,000–4,600 kbps) but the quality is perfect.
- What is the difference between mono and stereo audio?
- Mono audio has one channel — the same signal goes to both the left and right speakers or earphones. Stereo has two separate channels, allowing different sounds to come from different directions, creating a wider soundstage. Most music, podcasts, and videos use stereo. Mono is used for telephone calls, some radio broadcasts, and situations where file size is critical or the playback system has only one speaker.