The Briticizer converts American English words to their U.K. counterparts, but it can't translate other grammatical differences. It also doesn't convert dates and times to British standards.
The Briticizer also offers a tool to help writers convert to U.K. word usage. For example, people speaking U.K. English use the word "holiday" when American English speakers would use the term "vacation." While changing spelling and word usage is helpful, writers also need to know some basic grammatical differences. In American English, for example, the word "committee" is treated as a singular noun, while the word is a plural noun that refers to the people who are on the committee in U.K. English.