Years (yr)
A year is roughly the time the Earth takes to orbit the Sun.
Convert years to any time unit
1 year = 365.2425 days
Quick facts
- Unit
- Year (plural: years)
- Symbol
- yr
- Measures
- Time / Duration
- System
- Everyday
- Equals
- 31,556,952 seconds
- Definition
- 365.2425 days, the mean Gregorian calendar year.
- Also written
- years, annum, a
1 year in other units
| Days | 365.2425 d |
| Hours | 8,765.82 h |
| Minutes | 525,949.2 min |
| Seconds | 31,556,952 s |
| Months | 12 mo |
| Weeks | 52.1775 wk |
| Milliseconds | 31,556,952,000 ms |
| Centuries | 0.01 c |
What is a year?
A year is roughly the time the Earth takes to orbit the Sun. The Gregorian calendar has common years of 365 days and leap years of 366 days, averaging 365.2425 days over its 400-year cycle, and that average is the year used on this converter.
The astronomical tropical year, from one spring equinox to the next, is about 365.2422 days, so the Gregorian calendar drifts only about one day every 3,200 years.
Where the year sits among time units
The year is number 63 of 101 on our scale of time units, ordered from smallest to largest.
What years are used for
- Ages, anniversaries and history
- Interest rates and salaries (per annum)
- Science: geological and astronomical time
Years in real life
- A common year has 365 days; a leap year 366
- The average year has 8,765.82 hours
- Light travels about 9.46 trillion km in a year
One year is about 12 lunar months, or about 2 school years, or about 25% of a US presidential term, or about 1,096 working days.
Top year conversions
Common amounts of years
- 0.1 yr
- 0.2 yr
- 0.3 yr
- 0.4 yr
- 0.5 yr
- 0.6 yr
- 0.7 yr
- 0.8 yr
- 0.9 yr
- 1 yr
- 1.5 yr
- 2 yr
- 2.5 yr
- 3 yr
- 3.5 yr
- 4 yr
- 4.5 yr
- 5 yr
- 6 yr
- 7 yr
- 7.5 yr
- 8 yr
- 9 yr
- 10 yr
- 11 yr
- 12 yr
- 13 yr
- 14 yr
- 15 yr
- 16 yr
- 17 yr
- 18 yr
- 19 yr
- 20 yr
- 21 yr
- 22 yr
- 23 yr
- 24 yr
- 25 yr
- 26 yr
- 27 yr
- 28 yr
- 29 yr
- 30 yr
- 31 yr
- 32 yr
- 33 yr
- 34 yr
- 35 yr
- 36 yr
- 37 yr
- 38 yr
- 39 yr
- 40 yr
- 41 yr
- 42 yr
- 43 yr
- 44 yr
- 45 yr
- 46 yr
- 47 yr
- 48 yr
- 49 yr
- 50 yr
- 51 yr
- 52 yr
- 53 yr
- 54 yr
- 55 yr
- 56 yr
- 57 yr
- 58 yr
- 59 yr
- 60 yr
- 61 yr
- 62 yr
- 63 yr
- 64 yr
- 65 yr
- 66 yr
- 67 yr
- 68 yr
- 69 yr
- 70 yr
- 71 yr
- 72 yr
- 73 yr
- 74 yr
- 75 yr
- 76 yr
- 77 yr
- 78 yr
- 79 yr
- 80 yr
- 81 yr
- 82 yr
- 83 yr
- 84 yr
- 85 yr
- 86 yr
- 87 yr
- 88 yr
- 89 yr
- 90 yr
- 91 yr
- 92 yr
- 93 yr
- 94 yr
- 95 yr
- 96 yr
- 97 yr
- 98 yr
- 99 yr
- 100 yr
- 110 yr
- 120 yr
- 130 yr
- 140 yr
- 150 yr
- 160 yr
- 170 yr
- 180 yr
- 190 yr
- 200 yr
- 210 yr
- 220 yr
- 230 yr
- 240 yr
- 250 yr
- 260 yr
- 270 yr
- 280 yr
- 290 yr
- 300 yr
- 310 yr
- 320 yr
- 330 yr
- 340 yr
- 350 yr
- 360 yr
- 370 yr
- 380 yr
- 390 yr
- 400 yr
- 410 yr
- 420 yr
- 430 yr
- 440 yr
- 450 yr
- 460 yr
- 470 yr
- 480 yr
- 490 yr
- 500 yr
- 600 yr
- 700 yr
- 800 yr
- 900 yr
- 1,000 yr
- 1,200 yr
- 1,500 yr
- 2,000 yr
- 2,500 yr
- 3,000 yr
- 4,000 yr
- 5,000 yr
- 10,000 yr
Convert years to all 100 other units
Everyday
- yr to d
- yr to h
- yr to min
- yr to s
- yr to mo
- yr to wk
- yr to c
- yr to dec
- yr to ka
- yr to fn
- yr to Q
- yr to common year
- yr to leap year
- yr to semester
- yr to 30-day month
- yr to score (20 years)
Metric (SI)
- yr to ms
- yr to µs
- yr to ns
- yr to ps
- yr to fs
- yr to as
- yr to cs
- yr to ks
- yr to ds
- yr to Gs
- yr to Ms
- yr to zs
- yr to ys
- yr to Ts
Astronomical
- yr to a
- yr to sidereal day
- yr to synodic month
- yr to tropical year
- yr to Ma
- yr to sidereal year
- yr to Mars sol
- yr to galactic year
- yr to Ga
- yr to sidereal month
- yr to saros
- yr to Mars year
- yr to Metonic cycle
- yr to Platonic year
- yr to anomalistic year
- yr to draconic year
- yr to Jupiter day
- yr to Sothic cycle
- yr to Venus day
- yr to anomalistic month
- yr to draconic month
- yr to Callippic cycle
- yr to Gaussian year
- yr to Hipparchic cycle
- yr to Pluto year
- yr to sidereal second
- yr to tropical month
Scientific
Historical & cultural
- yr to generation
- yr to olympiad
- yr to baktun
- yr to decimal hour
- yr to 刻
- yr to 时辰
- yr to .beat
- yr to decimal minute
- yr to decimal second
- yr to ghati
- yr to jubilee
- yr to kalpa
- yr to lustrum
- yr to moment (medieval)
- yr to muhurta
- yr to yuga
- yr to cd
- yr to 更
- yr to helek
- yr to indiction
- yr to kalabtun
- yr to katun
- yr to kin (Maya)
- yr to mahayuga
- yr to manvantara
- yr to piktun
- yr to triennium
- yr to tun (Maya)
- yr to vighati
- yr to winal
Everyday comparisons
Convert to years
Frequently asked questions
What is a year?
A year is roughly the time the Earth takes to orbit the Sun.
How is the year defined?
365.2425 days, the mean Gregorian calendar year.
How many days are in a year?
One year equals 365.2425 days.
How many hours are in a year?
One year equals 8,765.82 hours.
How many minutes are in a year?
One year equals 525,949.2 minutes.