›› Measurement unit: year

Full name: Gregorian year

Plural form: years

Symbol: yr

Alternate spelling: yrs

Category type: time

Scale factor: 31556952


›› Similar units

Gregorian year
Julian year
tropical year
sidereal year
anomalistic year
draconic year
lunar year
Gaussian year


›› SI unit: second

The SI base unit for time is the second.
1 second is equal to 3.1688738506811E-8 year.


›› Convert year to another unit

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›› Definition: Year

An average Gregorian year is 365.2425 days (52.1775 weeks, 8765.82 hours, 525949.2 minutes or 31556952 seconds). For this calendar, a common year is 365 days (8760 hours, 525600 minutes or 31536000 seconds), and a leap year is 366 days (8784 hours, 527040 minutes or 31622400 seconds). The 400-year cycle of the Gregorian calendar has 146097 days and hence exactly 20871 weeks.

ag = a_g = 365.2425 days for the mean Gregorian year


›› Sample conversions: year

year to century
year to second
year to Julian month
year to Gregorian month
year to draconic year
year to lunar year
year to sidereal year
year to millennium
year to draconic month
year to decade