# Add zero to 1-digit tracknumber

**URL:** https://community.mp3tag.de/t/add-zero-to-1-digit-tracknumber/15414
**Category:** Support
**Created:** [January 20, 2014, 1:53pm UTC](https://community.mp3tag.de/t/add-zero-to-1-digit-tracknumber/15414 "2014-01-20T13:53:09Z")
**Posts on this page:** 5
**Page:** 1

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### Author: ![Jilt](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/j/3bc359/32.png) [@Jilt](https://community.mp3tag.de/u/Jilt)
#### Post date: [January 20, 2014, 1:53pm UTC](https://community.mp3tag.de/t/add-zero-to-1-digit-tracknumber/15414/1 "2014-01-20T13:53:09Z")

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Dear forum,

If my filenames in a folder look like this:

Track 1.mp3  
Track 2.mp3  
[..]  
Track 10.mp3

how can I change this to:

Track 01.mp3  
Track 02.mp3  
[..]  
Track 10.mp3  
?

Thanks in advance for your help!  
Jilt

---

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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: [January 20, 2014, 2:44pm UTC](https://community.mp3tag.de/t/add-zero-to-1-digit-tracknumber/15414/2 "2014-01-20T14:44:32Z")

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> [@Jilt](#):
>
> ... If my filenames in a folder look like this:  
> Track 1.mp3  
> Track 2.mp3  
> Track 10.mp3  
> how can I change this to:  
> Track 01.mp3  
> Track 02.mp3  
> Track 10.mp3  
> ...

1. You can set the tag-field TRACK within the file to look like what you want, ...  
then rename the file with the converter "Tag - Filename".  
You can use the track numbering assistant from the Mp3tag menu.

2. You can use the converter "Filename - Filename" ...  
Mask old name: %1 %2  
Mask new name: %1 $num(%2,2)

... and additionally there are some other ways to go in Mp3tag using other converters or using the Mp3tag scripting language in actions.

1. You can see there for a set of ready made action groups for manipulating ...  
TRACK and TOTALTRACKS ...  
[Adding "totaltracks" tag en mass?](https://community.mp3tag.de/t/12205/5)

DD.20140120.1644.CET

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### Author: ![chrishirst](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/c/4af34b/32.png) [@chrishirst](https://community.mp3tag.de/u/chrishirst)
#### Post date: [January 20, 2014, 5:02pm UTC](https://community.mp3tag.de/t/add-zero-to-1-digit-tracknumber/15414/3 "2014-01-20T17:02:33Z")

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Or you could use this tool, Bulk [Rename Utility](http://www.bulkrenameutility.co.uk/Main_Intro.php)

My .bru renaming pattern file attached for inserting a lead zero to single numbers at the end of a file name in a 1 - 99 list of files.

It doesn't read tags or anything, it just renames files.

[insert\_lead\_zero.zip](https://community.mp3tag.de/uploads/default/original/2X/1/1bd8e5e136b56c1a382a588200c5682c3b4b480d.zip) (841 Bytes)

[insert\_lead\_zero.zip](https://community.mp3tag.de/uploads/default/original/2X/1/1bd8e5e136b56c1a382a588200c5682c3b4b480d.zip) (841 Bytes)

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### Author: ![Jilt](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/j/3bc359/32.png) [@Jilt](https://community.mp3tag.de/u/Jilt)
#### Post date: [January 22, 2014, 7:24pm UTC](https://community.mp3tag.de/t/add-zero-to-1-digit-tracknumber/15414/4 "2014-01-22T19:24:24Z")

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> [@DetlevD](#):
>
> 1. You can use the converter "Filename - Filename" ...  
> Mask old name: %1 %2  
> Mask new name: %1 $num(%2,2)

I used this one, it worked perfectly for me. Thanks a lot!  
Jilt

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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, 12:24pm UTC](https://community.mp3tag.de/t/add-zero-to-1-digit-tracknumber/15414/5 "2026-02-09T12:24:52Z")

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