Nanoseconds to Years (ns to yr)
1 nanosecond equals 3.168873851×10⁻¹⁷ years (rounded).
How to convert nanoseconds to years
To convert nanoseconds to years, multiply the number of nanoseconds by 3.168873851×10⁻¹⁷. The factor is rounded to 10 significant digits. To go the other way, multiply years by 3.1556952×10¹⁶.
years = nanoseconds × 3.168873851×10⁻¹⁷
Example: 10 nanoseconds = 3.168873851×10⁻¹⁶ years.
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)
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
Year (yr)
The average Gregorian calendar year of 365.2425 days (31,556,952 seconds). A common year has 365 days and a leap year 366.
A year is the Earth's trip around the Sun, but there are several versions. The tropical year, which tracks the seasons, is about 365.2422 days. The sidereal year, measured against the stars, is about 365.2564 days, roughly 20 minutes longer, because the Earth's axis precesses. Calendars must squeeze these into whole days, which is the origin of leap years. English year descends from Old English gear, while Latin annus, the source of annual, comes from a different root.
The Gregorian calendar, introduced by Pope Gregory XIII's bull of 24 February 1582, fixed the problem of Julian drift that had moved the March equinox away from 21 March and upset the date of Easter. Ten days were skipped, so Thursday 4 October was followed by Friday 15 October. Its rule of skipping leap days in century years not divisible by 400 gives a mean year of 365.2425 days, the value this site uses for the year. Britain and its empire switched in 1752 and Russia in 1918. Scientists write the year as a, with the Julian year fixed at 31,557,600 seconds.
1 year = 31,556,952 seconds (exactly).
Sources: Wikipedia: Year; Wikipedia: Gregorian calendar
Related conversions
- Years to nanoseconds (reverse)
- Nanoseconds to seconds
- Nanoseconds to minutes
- Nanoseconds to hours
- Nanoseconds to days
- Nanoseconds to weeks
- Nanoseconds to months
- Nanoseconds to milliseconds
- Nanoseconds to microseconds
- Nanoseconds to decades
- Nanoseconds to centuries
- Nanoseconds to millennia
- Seconds to years
- Minutes to years
- Hours to years
- Days to years
- Weeks to years
- Months to years
- Milliseconds to years
- Microseconds to years
- Decades to years
- Centuries to years
- Millennia to years
- Picoseconds to years
See all time units.