**Author:**  [@treadhead194](https://community.mp3tag.de/u/treadhead194)\
**Post date:** [January 14, 2018, 10:42pm UTC](https://community.mp3tag.de/t/would-like-to-have-length-of-track-in-html-report/19691/1 "2018-01-14T22:42:53Z")
I'm trying to get the "Length", time, in the html report of my mp3s. The HTML\_Standard does have the column heading "Length" but does not report it I'm guessing that the string I have in there is incorrect to report the "Length" but I have no clue as to how to change it. The string that I have in the body of the report is:
\$replace(%length%,&,&).
I know this must be wrong because the "Length" has to do with time and it's probably not reported as text, so my question is how do I change the string to report correctly?
---
**Author:**  [@poster](https://community.mp3tag.de/u/poster)\
**Post date:** [January 15, 2018, 4:50am UTC](https://community.mp3tag.de/t/would-like-to-have-length-of-track-in-html-report/19691/2 "2018-01-15T04:50:22Z")
It is **%\_length%** , not %length%.
---
**Author:**  [@treadhead194](https://community.mp3tag.de/u/treadhead194)\
**Post date:** [January 15, 2018, 11:24am UTC](https://community.mp3tag.de/t/would-like-to-have-length-of-track-in-html-report/19691/3 "2018-01-15T11:24:54Z")
Thanks. I do not know coding soooooo.......
---
**Author:**  [@The\_Archivist](https://community.mp3tag.de/u/The_Archivist)\
**Post date:** [July 10, 2019, 10:50pm UTC](https://community.mp3tag.de/t/would-like-to-have-length-of-track-in-html-report/19691/4 "2019-07-10T22:50:53Z")
Don't worry, finding that subtle difference isn't obvious anywhere (and even in the dialogs inside of MP3Tag, it does not suggest that string, only the one without the underscore (i.e: %length%).
---
**Author:**  [@ohrenkino](https://community.mp3tag.de/u/ohrenkino)\
**Post date:** [July 11, 2019, 5:15am UTC](https://community.mp3tag.de/t/would-like-to-have-length-of-track-in-html-report/19691/5 "2019-07-11T05:15:13Z")
> [@The\_Archivist](#):
>
> and even in the dialogs inside of MP3Tag, it does not suggest that string, only the one without the underscore
This is true if you have used a user-defined field with the name %length%.
To test this, you could reset the list of fields to its original contents with the functions in the right-arrow-menu next to the list.
Otherwise you find the reference to %\_length% in the help on exports:
> **[Format Strings and Placeholders – Mp3tag Documentation](https://docs.mp3tag.de/format/)**
>
> Documentation on format strings and placeholders to describe the structure of file names and imported data. Mp3tag is the universal Tag Editor.
and also in the list of information fields - not in the list of tag fields.
---
**Author:**  [@system](https://community.mp3tag.de/u/system)\
**Post date:** [February 9, 2026, 12:27pm UTC](https://community.mp3tag.de/t/would-like-to-have-length-of-track-in-html-report/19691/6 "2026-02-09T12:27:11Z")