Drop an audio file to see its duration, sample rate, channels, length and estimated bitrate. Decoded in your browser; nothing is uploaded.
Drop an audio file here or click to choose
Decoded entirely in your browser. Nothing is uploaded.
The file is decoded with the Web Audio API to read its true properties. Bitrate is estimated from file size and duration. Browser audio decoders vary, so some exotic formats (or some FLAC) may not decode everywhere.
It shows the duration, sample rate (e.g. 44,100 Hz), number of channels (mono or stereo), the total sample count, the file size, and an estimated bitrate. These are the core technical properties of any audio file.
It divides the file size in bits by the duration in seconds. For constant-bitrate files this is very close to the real value; for variable-bitrate files it is an average. The sample rate and channel count are read exactly from the decoded audio.
No. The file is decoded locally with the Web Audio API to read its properties, so it never leaves your device. Note that browsers differ in which formats they can decode, so a few unusual formats may not open everywhere.