Audio duration checker

Upload an audio file and instantly check its exact duration.

Your file never leaves your device. All processing happens right in your browser, and nothing is uploaded to a server.

Exact length, not a player estimate

Players sometimes guess duration from incomplete headers, especially for variable-bitrate MP3s, and get it wrong. This tool parses the file itself and reports the real length.

Where precision matters

Broadcast slots and ad spots with exact time requirements, podcast episode listings, course content that promises specific lengths, and checking whether a recording captured the whole session.

FAQ