Audio duration checker

Upload an audio file and instantly check its exact duration.

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.

Frequently asked questions

Why does my player show the wrong duration for this file?

Variable-bitrate files without proper headers make players estimate. Parsing the actual stream, as this checker does, gives the true figure.

Does it handle long recordings?

Yes, multi-hour files parse fine since nothing is uploaded.