Convert Year (y) to Century (century) instantly.
About these units
Year (y)
A year is the time it takes Earth to complete one orbit around the Sun, approximately 365.2422 days. This value is not exact, which is why leap years exist. The year is the foundation of calendars, agriculture, climate cycles, financial planning, long-term engineering designs, and historical chronology. Its importance spans science, culture, religion, and economics. The modern Gregorian calendar year is an elegant compromise that aligns civil life with astronomical reality, minimizing drift between the calendar and the seasons. Despite its complexity, it remains the global standard for structuring long-term human activity.
Century (century)
A century equals 100 years and is a major unit of historical, demographic, and civilizational analysis. Historians frequently divide narratives into centuries to highlight long-term transformations—technological revolutions, empire rises and falls, or artistic movements. Sociologists study century-scale changes in population, urbanization, and cultural evolution. Although human lifespans rarely exceed one century, this unit is large enough to encompass sweeping societal changes, making it ideal for macrohistorical studies.