How to Calculate the Total Duration of Many Audio Files at Once
When you deliver a voice project, the client often asks for the total hours recorded, or you are paid per audio hour. Opening files one by one to read their length is slow. The Sayvoi audio duration calculator reads the length of many files together and gives you the total.
How to use it
- Open the calculator and select your files (or drop a whole batch).
- Wait a moment while it reads each file's header.
- Read the total in hours, minutes and seconds, and the duration of each file.
Why it is fast and private
The tool reads only the file information (the header) in your browser. It does not upload anything, so large folders of recordings never leave your computer.
Supported formats
WAV, FLAC, MP3, OGG and M4A. If a file cannot be read, it is listed so you can check it rather than silently skipped.
Common uses
- Invoicing and reporting: confirm the exact audio hours before you send a report.
- Quota checks: make sure a speaker reached the required minutes.
- Finding odd files: a file much shorter or longer than the others is often a mistake.
For the rest of the checks before delivery, use the quality checker and the pre-delivery checklist.
Add up the length of many audio files at once, without uploading them.
Open the duration calculator