This feature is now available in Word for the Web. Try it out and post your comments here in case of any suggestions/feedback.
Please implement this feature ASAP! how is this not already available!!!
Toggle word case is a killer feature of Word desktop. Make it available with Word Online as well.
It would be good to have the option everybody has at the desktop version of Word.
sentence, every word, every letter, all off
William Razgunas commented
I would like the "change case" added particularly if you have already purchased an Office subscription, and have the paid version of Word downloaded.