# ››Convert day to Gregorian year

 day year

 Did you mean to convert day to Gregorian year Julian year tropical year sidereal year anomalistic year draconic year lunar year Gaussian year

How many day in 1 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 year
The SI base unit for time is the second.
1 second is equal to 1.1574074074074E-5 day, or 3.1688738506811E-8 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.

# ››Want other units?

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

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# ››Definition: Day

A continous 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!