**Full name:** Gregorian year

**Plural form:** years

**Symbol:** yr

**Alternate spelling:** yrs

**Category type:** time

**Scale factor:** 31556952

The SI base unit for time is the second.

1 second is equal to 3.1688738506811E-8 Gregorian year.

Valid units must be of the **time** type.

You can use this form to select from known units:

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.

a_{g} = a_g = 365.2425 days for the mean Gregorian year

Gregorian year to anomalistic month

Gregorian year to shake

Gregorian year to week

Gregorian year to Julian month

Gregorian year to fortnight

Gregorian year to Gregorian month

Gregorian year to sidereal month

Gregorian year to anomalistic year

Gregorian year to quarter

Gregorian year to microsecond