Days to Years Conversion Calculator

Convert days to years quickly and easily with our free online calculator.

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How to Convert Days to Years

To convert from days to years, divide your days value by 365.25 (or multiply by 0.00273790700698). This accounts for leap years. For example, 365.25 days equals 1 year.

Common Conversions

  • 365 days = 0.9993 years
  • 365.25 days = 1 year
  • 730.5 days = 2 years
  • 1,826.25 days = 5 years
  • 3,652.5 days = 10 years
  • 18,262.5 days = 50 years

How to Use

  1. Enter the number of days in the input field
  2. The result in years will be calculated automatically
  3. The conversion uses 365.25 days per year to account for leap years

About the Conversion

The day to year conversion is helpful for calculating ages, understanding project durations in years, converting daily measurements into annual periods, and analyzing long-term time spans.

Set the calculator to your desired defaults above, then copy the code below.

Or set custom default values:

Day to Year Conversion Table

Common Days to Years conversions:

Common Day to Year conversion values
Days (d) Years (yr)
1 0.0027
2 0.0055
3 0.0082
4 0.011
5 0.0137
10 0.0274
15 0.0411
20 0.0548
25 0.0684
50 0.1369
75 0.2053
100 0.2738
250 0.6845
500 1.3689
1,000 2.7379

Frequently Asked Questions

How many years are in 1 day?
There are 0.0027 years in 1 day.
How do you convert days to years?
To convert days to years, multiply the number of days by 0.0027. For example, 5 days = 0.0137 years.
How many days are in 1 year?
There are 365.25 days in 1 year.

Time Conversion Table

Select a conversion from the table below. Click any cell to convert between units.

From / To Century Day Decade Hour Millennium Millisecond Minute Second Week Year
Century — Century to Day Century to Decade Century to Hour Century to Millennium Century to Millisecond Century to Minute Century to Second Century to Week Century to Year
Day Day to Century — Day to Decade Day to Hour Day to Millennium Day to Millisecond Day to Minute Day to Second Day to Week Day to Year
Decade Decade to Century Decade to Day — Decade to Hour Decade to Millennium Decade to Millisecond Decade to Minute Decade to Second Decade to Week Decade to Year
Hour Hour to Century Hour to Day Hour to Decade — Hour to Millennium Hour to Millisecond Hour to Minute Hour to Second Hour to Week Hour to Year
Millennium Millennium to Century Millennium to Day Millennium to Decade Millennium to Hour — Millennium to Millisecond Millennium to Minute Millennium to Second Millennium to Week Millennium to Year
Millisecond Millisecond to Century Millisecond to Day Millisecond to Decade Millisecond to Hour Millisecond to Millennium — Millisecond to Minute Millisecond to Second Millisecond to Week Millisecond to Year
Minute Minute to Century Minute to Day Minute to Decade Minute to Hour Minute to Millennium Minute to Millisecond — Minute to Second Minute to Week Minute to Year
Second Second to Century Second to Day Second to Decade Second to Hour Second to Millennium Second to Millisecond Second to Minute — Second to Week Second to Year
Week Week to Century Week to Day Week to Decade Week to Hour Week to Millennium Week to Millisecond Week to Minute Week to Second — Week to Year
Year Year to Century Year to Day Year to Decade Year to Hour Year to Millennium Year to Millisecond Year to Minute Year to Second Year to Week —