How do I simultaneously select multiple values for k-means in WEKA? I have tried WEKA's Experimenter. However, it's for classification. 

I'm looking for a way to apply the k-means algorithm on the same dataset but with multiple 'k' values. Is there any option in WEKA's GUI allow this?
Try writing a program.

It's easy to do a for loop over k.

You will also want to use multiple random seeds.