The phrase "to the amount of" refers to a specific quantity or number, but there are several synonyms that can be used in its place to provide more variety or clarity in writing. Some synonymous phrases include "up to," "equivalent to," "corresponding to," "commensurate with," "proportional to," "measuring," and "matching." These terms all convey a similar meaning, but some may be more appropriate in certain contexts or emphasize different aspects of the amount in question. By using synonyms for "to the amount of," writers can elevate their language and make their writing more engaging for readers.