how many years are  in a century
There are 100 years in a century; when used to denote time periods, a century starts with year 1 and ends with year 100. For example, the 21st century describes the period of time from 2001 to 2100. Continue Reading. The word century also refers to a group of 100 similar items. A century was a sub-unit of the Roman army that contained 100 soldiers. Races referred to as centuries contain 100 units (such as 100 yards). Century was first used in the year 1533.