# Upper case

**URL:** <https://community.mp3tag.de/t/upper-case/19132>\
**Category:** Support\
**Created:** [July 10, 2017, 4:02am UTC](https://community.mp3tag.de/t/upper-case/19132 "2017-07-10T04:02:07Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![Djpaf](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/d/a183cd/32.png) [@Djpaf](https://community.mp3tag.de/u/Djpaf)\
**Post date:** [July 10, 2017, 4:02am UTC](https://community.mp3tag.de/t/upper-case/19132/1 "2017-07-10T04:02:07Z")

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Hello,

I am trying to change my filenames from lower case to upper case but when i do that it says that file cannot be renamed and file already exists. What am I supposed to do? What is the wrong?

Thank you

 ![](https://community.mp3tag.de/uploads/default/original/2X/4/4152bda718083854b1ef6d5e47e22238340c9f91.png)

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**Author:** ![ohrenkino](https://community.mp3tag.de/user_avatar/community.mp3tag.de/ohrenkino/32/4843_2.png) [@ohrenkino](https://community.mp3tag.de/u/ohrenkino)\
**Post date:** [July 10, 2017, 4:57am UTC](https://community.mp3tag.de/t/upper-case/19132/2 "2017-07-10T04:57:23Z")

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See  
[[X] Mixed Case on Mac OS Sierra not working : "file already exists"](https://community.mp3tag.de/t/19115/4)

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<div class="post-metadata">

**Author:** ![Djpaf](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/d/a183cd/32.png) [@Djpaf](https://community.mp3tag.de/u/Djpaf)\
**Post date:** [July 10, 2017, 6:07am UTC](https://community.mp3tag.de/t/upper-case/19132/3 "2017-07-10T06:07:59Z")

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Thank you for your response. But still doing nothing. I tried. If someone can upload some screenshots how can i do it..

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**Author:** ![ohrenkino](https://community.mp3tag.de/user_avatar/community.mp3tag.de/ohrenkino/32/4843_2.png) [@ohrenkino](https://community.mp3tag.de/u/ohrenkino)\
**Post date:** [July 10, 2017, 7:02am UTC](https://community.mp3tag.de/t/upper-case/19132/8 "2017-07-10T07:02:56Z")

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Select the files.  
Use the function Convert\>Tag-Tag for \_FILENAME  
Format string: `$upper(%_filename%)_`

Now use the same function but use  
Format string: `$replace(%_filename%,_,)`

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**Author:** ![Djpaf](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/d/a183cd/32.png) [@Djpaf](https://community.mp3tag.de/u/Djpaf)\
**Post date:** [July 10, 2017, 7:19am UTC](https://community.mp3tag.de/t/upper-case/19132/9 "2017-07-10T07:19:04Z")

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That works!! Thank you very much and excuse but my english are not good enough to explain you!! Thank you again!

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**Author:** ![DetlevD](https://community.mp3tag.de/user_avatar/community.mp3tag.de/detlevd/32/123_2.png) [@DetlevD](https://community.mp3tag.de/u/DetlevD)\
**Post date:** [July 11, 2017, 7:20am UTC](https://community.mp3tag.de/t/upper-case/19132/10 "2017-07-11T07:20:13Z")

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> [@ohrenkino](#):
>
> ... Format string: `$upper(%_filename%)_`  
> ... Format string: `$replace(%_filename%,_,)`

For the second step recommended: `$trimRight(%_filename%,'_')`

DD.20170711.1120.CEST

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**Author:** ![system](https://community.mp3tag.de/uploads/default/original/2X/c/ce7035d426cb755a7916793326d23b465222a407.png) [@system](https://community.mp3tag.de/u/system)\
**Post date:** [February 9, 2026, 12:26pm UTC](https://community.mp3tag.de/t/upper-case/19132/11 "2026-02-09T12:26:53Z")

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