on Writing Forward:

Learn the difference between two, too and to
One of our readers wrote in to ask about the homophones too and to:
“I was trying to find something on how and when to use ‘to and too’ I am having trouble in that area. I have trouble with that a lot and I tend to mess up with that. Can you help and do you already have something posted about that? I can’t find anything on it.”
There’s actually a third homophone in this group, which sounds like too and to, although it’s not mixed up with them as often as they are mixed up with each other. That would be the word for the numeral 2, which is two.
Even though they have distinctly different meanings and spellings, these words can be confusing because they sound exactly alike.
