How do you spell to?

There are three "homophones" (sound-alike Words) in English that may become confused.

TO - used with infinitive verbs, as a preposition, or when going somewhere

TOO - used exclusively to mean "overly" or "also"

TWO - the numeral 2

Example of all three :

"He, too, wanted to carry two bags to the car, but they were too heavy."