# Capitalizing Initials Formula
**URL:** https://community.mp3tag.de/t/capitalizing-initials-formula/3453
**Category:** Support
**Created:** [June 15, 2006, 2:07am UTC](https://community.mp3tag.de/t/capitalizing-initials-formula/3453 "2006-06-15T02:07:02Z")
**Posts on this page:** 9
**Page:** 1
### Author:  [@fcastro](https://community.mp3tag.de/u/fcastro)
#### Post date: [June 15, 2006, 2:07am UTC](https://community.mp3tag.de/t/capitalizing-initials-formula/3453/1 "2006-06-15T02:07:02Z")
Hi everyone, had another question I was hoping someone out there could give me a hand with. 
I want to capitalize artists initials, for example:
**E.l.o. - One More Time.mp3**
to
**E.L.O. - One More Time.mp3**
So what I did was to make a rule that stated this:
Field: **\_Filename**
Case Conversion: **Mixed Case**
Words begin from/after any of: **.**
but this is what I ended up getting:
**E.L.O. - One More Time.Mp3**
Is there another formula so that "Mp3" isn't capitalized?
---
### Author:  [@dano](https://community.mp3tag.de/u/dano)
#### Post date: [June 15, 2006, 2:17pm UTC](https://community.mp3tag.de/t/capitalizing-initials-formula/3453/2 "2006-06-15T14:17:45Z")
I thought the extension would not be affected by this action type, maybe a small bug.
But you can try this action:
_Action type:_ **Format value**
_Field:_ **\_FILENAME**
_Formatstring:_ **$caps2(%\_filename%,.)**
---
### Author:  [@fcastro](https://community.mp3tag.de/u/fcastro)
#### Post date: [June 23, 2006, 7:45pm UTC](https://community.mp3tag.de/t/capitalizing-initials-formula/3453/3 "2006-06-23T19:45:23Z")
Dano You rock thanks it worked perfectly. In the last version of mp3 I could have sworn that was the case it would never cap .mp3 not sure what the scoop is...
thanks again I could have never figured that one out 🙂
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### Author:  [@fcastro](https://community.mp3tag.de/u/fcastro)
#### Post date: [January 31, 2007, 4:34pm UTC](https://community.mp3tag.de/t/capitalizing-initials-formula/3453/4 "2007-01-31T16:34:22Z")
Just wanted to see if anyone knew how to get this to work for other fields.
I tried this for the artists field but its not working.
Field:Artist
Format String:$caps(%\_artist%,.)
Is there some global one I could do that would capitalize all initials?
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### Author:  [@dano](https://community.mp3tag.de/u/dano)
#### Post date: [January 31, 2007, 6:07pm UTC](https://community.mp3tag.de/t/capitalizing-initials-formula/3453/5 "2007-01-31T18:07:04Z")
Tag fields have no underscores, it's %artist%
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### Author:  [@fcastro](https://community.mp3tag.de/u/fcastro)
#### Post date: [February 1, 2007, 1:35am UTC](https://community.mp3tag.de/t/capitalizing-initials-formula/3453/6 "2007-02-01T01:35:07Z")
Hey Dano, hmm well tried this it didn't work either.
Action type: Format value
Field: \_FILENAME
Formatstring: $caps2(%artist%,.)
Did I miss something?
---
### Author:  [@dano](https://community.mp3tag.de/u/dano)
#### Post date: [February 1, 2007, 1:19pm UTC](https://community.mp3tag.de/t/capitalizing-initials-formula/3453/7 "2007-02-01T13:19:34Z")
 The proper combinatin would be
Action type: Format value
Field: ARTIST
Formatstring: $caps2(%artist%,.)
For all tag fiels at once:
_Action type:_ **Replace with regular expressions**
_Field:_ **\_TAG**
_Regular expression:_ **(\l).**
_Replace matches with:_ **$upper($1).**
---
### Author:  [@fcastro](https://community.mp3tag.de/u/fcastro)
#### Post date: [February 20, 2007, 1:55am UTC](https://community.mp3tag.de/t/capitalizing-initials-formula/3453/8 "2007-02-20T01:55:30Z")
Thanks Dano!
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### Author:  [@system](https://community.mp3tag.de/u/system)
#### Post date: [February 9, 2026, 12:19pm UTC](https://community.mp3tag.de/t/capitalizing-initials-formula/3453/9 "2026-02-09T12:19:47Z")