What is 1 century, how many years are in one century?

One century is equal to 100 years. A century is a period of 100 years, and is often used to denote a period of time in history. It is also sometimes used to describe a period of time of great importance or significance, such as the 20th century. Centuries are often divided into decades, which are periods of 10 years.

The length of a century is determined by the calendar system used. In the Gregorian calendar, which is the most widely used calendar system in the world, a century is equal to 100 years. This means that a century starts on the first day of the year in the 1st year and ends on the last day of the year in the 100th year. For example, the 20th century began on January 1st, 1901 and ended on December 31st, 2000.

The length of a century can also vary depending on the type of calendar system used. For example, in the Julian calendar, which was used prior to the Gregorian calendar, a century is equal to 98 years. This means that a century in the Julian calendar starts on the first day of the year in the 1st year and ends on the last day of the year in the 98th year.

Overall, a century is equal to 100 years in the Gregorian calendar, and 98 years in the Julian calendar.