Nanoseconds to Centuries (ns to c)

1 nanosecond equals 3.168873851×10⁻¹⁹ centuries (rounded).

1 nanosecond = 3.168873851×10⁻¹⁹ centuries

How to convert nanoseconds to centuries

To convert nanoseconds to centuries, multiply the number of nanoseconds by 3.168873851×10⁻¹⁹. The factor is rounded to 10 significant digits. To go the other way, multiply centuries by 3.1556952×10¹⁸.

centuries = nanoseconds × 3.168873851×10⁻¹⁹

Example: 10 nanoseconds = 3.168873851×10⁻¹⁸ centuries.

Months and years are not constant. This site uses the average Gregorian year of 365.2425 days, so one 'year' converts to 365.2425 days, not 365; use 'common year' for exactly 365 days.

About these units

Nanosecond (ns)

Metric (SI)Current unit

One billionth of a second. Light travels about 30 cm in a nanosecond.

Few units are as easy to picture as the nanosecond, because light makes it concrete. In a vacuum, light needs about 3.34 nanoseconds to travel one metre and about 1.02 nanoseconds to travel one foot. That is why engineers talk about wire lengths and signal delays in the same breath once clocks reach the gigahertz range, where the cycle time of a 1 GHz signal is exactly one nanosecond.

A nanosecond is one billionth of a second, and the ratio is hard to grasp: one nanosecond is to one second as one second is to about 31.7 years. It is the natural unit of fast digital hardware. A 74HC-series logic chip common in the mid-1980s had a typical propagation delay of about 8 ns, and the gap between packets on Gigabit Ethernet is 96 ns. The Go language's time package offers 1 ns precision.

1 nanosecond = 1×10⁻⁹ seconds (exactly).

Sources: Wikipedia: Nanosecond; BIPM: SI Brochure, 9th edition

Century (c)

CalendarCurrent unit

One hundred years.

From Latin centum, a hundred, century has meant a hundred of many things. For time it became popular as a way to speak about a span longer than a lifetime can easily contain, and some languages organise history around it: Italian uses terms like Quattrocento for the 15th century, and Swedish writes 1900-talet for the years 1900 to 1999. Whether such a century starts at year 00 or year 01 is an old argument.

A century is 100 years, which here means 100 average Gregorian years. The strict view counts from year 1, because the AD calendar has no year zero, so the 1st century AD ran from AD 1 to AD 100 and the 21st century covers 2001 to 2100. The popular view groups years by their hundreds digit, making the 20th century 1900 to 1999. The Gregorian calendar itself treats century years specially, since 1700, 1800 and 1900 were not leap years while 1600 and 2000 were.

1 century = 3,155,695,200 seconds (exactly).

Sources: Wikipedia: Century; Wikipedia: Gregorian calendar

Related conversions

See all time units.