to / too / two are similar-sounding terms with different meanings (referred to as homophones). To better understand the differences, see below for definitions, pronunciation guides, and example sentences using each term. 👇
to: NA
too: NA
two: (noun) the cardinal number that is the sum of one and one or a numeral representing this number. (adjective) being one more than one.
to: t·UW
too: t·UW
two: t·UW
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)