What is year (365 d)?

A year is a unit of time equal to 365 days, representing approximately one orbit of the Earth around the Sun. It is used for long-term planning, age calculation, financial cycles, and historical timekeeping.

What is century (100 yr)?

A century is a unit of time equal to 100 years. It is used in historical analysis, long-term demographic and climate projections, and describing spans of civilizational or geological time.

Worked examples

1 year (365 d) = 0.01 century (100 yr)

1 century (100 yr) = 3.153600e+09 second