›› Convert day to Gregorian year

Gregorian year

›› More information from the unit converter

How many day in 1 Gregorian year? The answer is 365.2425.
We assume you are converting between day and Gregorian year.
You can view more details on each measurement unit:
day or Gregorian year
The SI base unit for time is the second.
1 second is equal to 1.1574074074074E-5 day, or 3.1688738506811E-8 Gregorian year.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between days and years.
Type in your own numbers in the form to convert the units!

›› Date difference between calendar days

You may also want to find out how many days are between two dates on the calendar. Use the date calculator to get your age in days or measure the duration of an event.

›› Quick conversion chart of day to Gregorian year

1 day to Gregorian year = 0.00274 Gregorian year

10 day to Gregorian year = 0.02738 Gregorian year

50 day to Gregorian year = 0.1369 Gregorian year

100 day to Gregorian year = 0.27379 Gregorian year

200 day to Gregorian year = 0.54758 Gregorian year

500 day to Gregorian year = 1.36895 Gregorian year

1000 day to Gregorian year = 2.73791 Gregorian year

›› Want other units?

You can do the reverse unit conversion from Gregorian year to day, or enter any two units below:

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›› Common time conversions

day to millennium
day to hour
day to nanosecond
day to microsecond
day to minute
day to shake
day to century
day to week
day to second
day to decade

›› Definition: Day

A continuous period of 24 hours which, unless the context otherwise requires, runs from midnight to midnight.

›› 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

›› Metric conversions and more

ConvertUnits.com provides an online conversion calculator for all types of measurement units. You can find metric conversion tables for SI units, as well as English units, currency, and other data. Type in unit symbols, abbreviations, or full names for units of length, area, mass, pressure, and other types. Examples include mm, inch, 100 kg, US fluid ounce, 6'3", 10 stone 4, cubic cm, metres squared, grams, moles, feet per second, and many more!