Convert years to days
1 year equals 365.2425 days. Enter a value below to convert instantly.
Need the other direction? Convert day to year →
Formula
Multiply the number of years by 365.2425 to get days.
Step by step
- Start with 1 yr.
- Multiply by the conversion factor 365.2425.
- 1 × 365.2425 = 365.2425 d.
Years to Days conversion table
| Years (yr) | Days (d) |
|---|---|
| 1 | 365.2425 |
| 2 | 730.485 |
| 5 | 1,826.2125 |
| 10 | 3,652.425 |
| 30 | 10,957.275 |
| 60 | 21,914.55 |
| 100 | 36,524.25 |
| 500 | 182,621.25 |
| 1,000 | 365,242.5 |
Convert Year to other time units
1 yr expressed in every other time unit on this site.
- Second s 31,556,952
- Millisecond ms 31,556,952,000
- Microsecond µs 31,556,952,000,000
- Nanosecond ns 3.1556952e+16
- Picosecond ps 3.1556952e+19
- Femtosecond fs 3.1556952e+22
- Attosecond as 3.1556952e+25
- Shake shake 3.1556952e+15
- Planck Time tP 5.8533679e+50
- Minute min 525,949.2
- Hour h 8,765.82
- Day d 365.2425
- Week wk 52.1775
- Fortnight fortnight 26.08875
- Month mo 12
- Quarter qtr 4
- Year yr 1
- Decade decade 0.1
- Century century 0.01
- Millennium millennium 0.001
- Day (sidereal) d (sid) 366.2425
- Hour (sidereal) h (sid) 8,789.8201
- Minute (sidereal) min (sid) 527,389.2
- Second (sidereal) s (sid) 31,643,352
- Week (Julian) wk (Jul) 52.1775
- Month (synodic) mo (syn) 12.368272
- Year (Julian) yr (Jul) 0.99997947
- Year (leap) yr (leap) 0.99793033
- Year (tropical) yr (trop) 1.0000007
- Year (sidereal) yr (sid) 0.99996205
- Year (common) yr (365d) 1.0006644
- Quinquennial 5 yr 0.20013288
- Septennial 7 yr 0.14295205
- Octennial 8 yr 0.12508305
- Novennial 9 yr 0.11118493
- Quindecennial 15 yr 0.066710959
About the year
The year (yr) is a Other unit of time. Average Gregorian year (365.2425 days).
About the day
The day (d) is a Other unit of time.
Where this conversion is used
Converting years to days comes up when scheduling, timers, project planning, and physics. Month and year use average calendar lengths, so they are approximate for any specific date range.
Related conversions
Frequently asked questions
How many days are in a year?
One year equals 365.2425 days.
How do you convert years to days?
Multiply the number of years by 365.2425 to get days.
What is 1 day in years?
One day equals 0.002737907 years.
When would I convert years to days?
This conversion is common when scheduling, timers, project planning, and physics.
Conversion factors are based on internationally agreed unit definitions. See our methodology and sources for details on how these values are verified.