Formula
a to d conversion formula
Use this relationship for a direct conversion:
d = a x 365.25
Worked example
2 a = 730.5 d.
Use the Date Calculators for calendar months, leap years, daylight saving transitions, and business days.
Time conversion
Convert Julian year to Day
1 julian year (a) equals 365.25 day (d). Enter any value below to convert from a to d.
Enter a value and choose units. Results update instantly.
1 a = 365.25 d
All Time units
From 1 a| Unit | Value |
|---|---|
| Nanosecond ns | 3.15576e16 |
| Microsecond μs | 3.15576e13 |
| Millisecond ms | 31,557,600,000 |
| Second s | 31,557,600 |
| Minute min | 525,960 |
| Hour h | 8,766 |
| Day d | 365.25 |
| Week wk | 52.1785714286 |
| Average Gregorian month mo | 12.0002464116 |
| Julian year a | 1 |
Recent conversions
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Quick reference
Julian year to Day table
| Julian year (a) | Day (d) |
|---|---|
| 0.01 | 3.6525 |
| 0.1 | 36.525 |
| 1 | 365.25 |
| 2 | 730.5 |
| 5 | 1,826.25 |
| 10 | 3,652.5 |
| 25 | 9,131.25 |
| 50 | 18,262.5 |
| 100 | 36,525 |
| 1,000 | 365,250 |
From unit
About the julian year
Exactly 365.25 days in astronomy.
Symbol: a
To unit
About the day
Exactly 24 hours for elapsed-time conversion.
Symbol: d
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Source
Conversion standard
Definitions are checked against BIPM SI Brochure: Units of time. Calculations use full internal precision before display rounding.
View the complete time converterQuestions
a to d FAQ
How do you convert julian year to day?
Use the formula d = a x 365.25. 1 julian year (a) equals 365.25 day (d).
Is the a to d conversion exact?
Both unit definitions use exact factors. Only the displayed decimal may be rounded.