Does changing my clothes nullify my wudu?

Changing clothes after you have performed wudu does not invalidate the ablution, therefore you are not required to repeat it again.

Wudu is invalidated when:
1. Anything exits from the two private parts of the body.
2. Impure substances such as blood or pus flow from their point of exit and encroach on a place which it is incumbent to purify.
3. Vomiting, if it was a mouthful (this is determined by whether you were able to keep your mouth closed or not)
4. Sleeping lying down so that the rear is not firmly seated, or leaning [on’s side] or reclining on something such that if it were removed he would fall.
5. Loss of consciousness through fainting or insanity.
6. Laughter in any prayer containing ruku` and sujud.

[Mutoon-e-Mazhab]

Allah knows best.

Answered by Mawlana Mohammed Kashif

Also see:

[Q-ID0313] Is Wudu nullified if my gums bleed?

[Q-ID0201] Can I recite the Qur’an, do dhikr and dua without wudu?

[Q-ID0176] Does a man’s Wudu break if he scratches his private organ?

[Q-ID0157] Does sweating break Wudu?

[Q-ID0074] Must I perform istinja everytime my Wudu is nullified?