is the 18th century 18 years ago

There are 100 years in a century; when used to denote time periods, a century starts with year 1 and ends with year 100.

ok thx!!!!!!

No, the 18th century was not 18 years ago. In fact, the 18th century refers to the time period from January 1, 1701, to December 31, 1800. To determine how many years ago a specific year in the 18th century was, you would subtract that year from the current year. For example, if the current year is 2022 and you want to find out how many years ago a specific event in the 18th century took place, you would subtract the year of the event from 2022.