| |||

Unit | Length, Duration and Size | Notes | Other |
---|---|---|---|

xentojiffy (physics) | -3(10^{53}s) | The amount of time it hypothetically takes light to hypothetically travel one Fermi (hypothetically the size of a nucleon) in a vacuum. This is the shortest time unit hypothetically possible to understand in physics. All hypothetically smaller time units have no hypothetical use in physics. | |

yoctojiffy (physics) | 3(10^{-49}s | The amount of time light takes to travel one fermi (about the size of a nucleon) in a vacuum. | |

zeptojiffy (physics) | 3(10^{-46}s | The amount of time light takes to travel one fermi (about the size of a nucleon) in a vacuum. | |

Planck time unit | 5.39(10^{-44} s | The amount of time light takes to travel one Planck length. | |

attojiffy (physics) | 3(10^{-43}s | The amount of time light takes to travel one fermi (about the size of a nucleon) in a vacuum. | |

femtojiffy (physics) | 3(10^{-40}s | The amount of time light takes to travel one fermi (about the size of a nucleon) in a vacuum. | |

picojiffy (physics) | 3(10^{-37}s | The amount of time light takes to travel one fermi (about the size of a nucleon) in a vacuum. | |

nanojiffy (physics) | 3(10^{-34}s | The amount of time light takes to travel one fermi (about the size of a nucleon) in a vacuum. | |

myriojiffy (physics) | 3(10^{-31}s | The amount of time light takes to travel one fermi (about the size of a nucleon) in a vacuum. | |

millijiffy (physics) | 3(10^{-29}s | The amount of time light takes to travel one fermi (about the size of a nucleon) in a vacuum. | |

xentojiffy (electronics) | 1/6(10^{28} s to 1/5(10^{28} s | Used to measure the time between alternating power cycles. Also a casual term for a short period of time | |

millijiffy (physics) | 3(10^{-28}s | The amount of time light takes to travel one fermi (about the size of a nucleon) in a vacuum. | |

xentosecond | 10^{-27} s | ||

centijiffy (physics) | 3(10^{-27}s | The amount of time light takes to travel one fermi (about the size of a nucleon) in a vacuum. | |

xentominute | 6 x 10^{-26} s | ||

yoctojiffy (electronics) | 1/6 x 10^{25} s to 1/5 x 10^{25} s | Used to measure the time between alternating power cycles. Also a casual term for a short period of time | |

decijiffy (physics) | 3(10^{-25}s | The amount of time light takes to travel one fermi (about the size of a nucleon) in a vacuum. | |

yoctosecond | 10^{-24} s | ||

jiffy (physics) | 3(10^{-24}s | The amount of time light takes to travel one fermi (about the size of a nucleon) in a vacuum. | |

decajiffy (physics) | 3(10^{-23}s | The amount of time light takes to travel one fermi (about the size of a nucleon) in a vacuum. | |

xentohour | 3.6 x 10^{-24} s | ||

yoctominute | 6 x 10^{-23} s | ||

xentoday | 8.64 x 10^{-23} s | ||

zeptojiffy (electronics) | 1/6 x 10^{22} s to 1/5 x 10^{22} s | Used to measure the time between alternating power cycles. Also a casual term for a short period of time | |

hectojiffy (physics) | 3(10^{-22}s | The amount of time light takes to travel one fermi (about the size of a nucleon) in a vacuum. | |

xentoweek | 6.048 x 10^{-22} s | ||

zeptosecond | 10^{-21} s | ||

xentomonth | 2.62974(10^{-21}s | ||

kilojiffy (physics) | 3(10^{-21}s | The amount of time light takes to travel one fermi (about the size of a nucleon) in a vacuum. | |

yoctohour | 3.6 x 10^{-21} s | ||

xentoannum | 10^{-27} years | 31.5569 zeptoseconds | |

zeptominute | 6 x 10^{-20} s | ||

yoctoday | 8.64 x 10^{-20} s | ||

attojiffy (electronics) | 1/6 x 10^{19} s to 1/5 x 10^{19} s | ||

yoctoweek | 6.048 x 10^{-19} s | ||

attosecond | 10^{-18} s | shortest time now measurable | |

yoctomonth | 2.62974(10^{-18}s | ||

megajiffy (physics) | 3(10^{-18}s | The amount of time light takes to travel one fermi (about the size of a nucleon) in a vacuum. | |

zeptohour | 3.6 x 10^{-18} s | ||

yoctoannum | 10^{-24} years | 31.5569 attoseconds | |

attominute | 6 x 10^{-17} s | ||

zeptoday | 8.64 x 10^{-17} s | get gotted | |

femtojiffy (electronics) | 1/6 x 10^{16} s to 1/5 x 10^{16} s | ||

zeptoweek | 6.048 x 10^{-16} s | ||

femtosecond | 10^{-15} s | pulse time on fastest lasers | |

zeptomonth | 2.62974(10^{-15}s | ||

gigajiffy (physics) | 3(10^{-15}s | The amount of time light takes to travel one fermi (about the size of a nucleon) in a vacuum. | |

attohour | 3.6 x 10^{-15} s | ||

zeptoannum | 10^{-21} years | 31.5569 femtoseconds | |

femtominute | 6 x 10^{-14} s | ||

attoday | 8.64 x 10^{-14} s | ||

picojiffy (electronics) | 1/6 x 10^{13} s to 1/5 x 10^{13} s | ||

svedberg | 1 x 10^{-13 }s | Time unit used for sedimentation rates (usually of proteins). | |

attoweek | 6.048 x 10^{-13} s | ||

picosecond | 10^{-12} s | ||

attomonth | 2.62974(10^{-12}s | ||

terajiffy (physics) | 3(10^{-12}s | The amount of time light takes to travel one fermi (about the size of a nucleon) in a vacuum. | |

femtohour | 3.6 x 10^{-12} s | ||

attoannum | 10^{-18} years | 31.5569 picoseconds | |

picominute | 6 x 10^{-11} s | ||

femtoday | 8.64 x 10^{-11} s | ||

nanojiffy (electronics) | 1/6 x 10^{10} s to 1/5 x 10^{10} s | ||

femtoweek | 6.048 x 10^{-10} s | ||

nanosecond | 10^{-9} s | time for molecules to fluoresce | |

femtomonth | 2.62974(10^{-9}s | ||

petajiffy (physics) | 3(10^{-9}s | The amount of time light takes to travel one fermi (about the size of a nucleon) in a vacuum. | |

picohour | 3.6 x 10^{-9} s | ||

femtoannum | 10^{-15} years | 31.5569 nanoseconds | |

shake | 10^{-8} s | Also a casual term for a short period of time | 10 nanoseconds |

nanominute | 6 x 10^{-8} s | ||

picoday | 8.64 x 10^{-8} s | ||

microjiffy (electronics) | 1/6 x 10^{7} s to 1/5 x 10^{7} s | ||

picoweek | 6.048 x 10^{-7} s | ||

microsecond | 10^{-6} s | ||

picomonth | 2.62974(10^{-6}s | ||

exajiffy (physics) | 3(10^{-6}s | The amount of time light takes to travel one fermi (about the size of a nucleon) in a vacuum. | |

nanohour | 3.6 x 10^{-6} s | ||

fifth | 4.63 x 10^{-6 }s | medieval unit of time | |

picoannum | 10^{-12} years | 31.5569 microseconds | |

myriojiffy (electronics) | 1/600000 s to 1/500000 s | ||

microminute | 6 x 10^{-5} s | ||

nanoday | 8.64 x 10^{-5} s | ||

myriosecond | 0.0001 s | shortest time unit used on stopwatches | |

millijiffy (electronics) | 1/60000 s to 1/50000 s | ||

fourth | 1/3,600 second | medieval unit of time | |

nanoweek | 6.048 x 10^{-4} s | ||

millisecond | 0.001 s | shortest time unit used on stopwatches | |

nanomonth | 0.00262974 s | ||

zettajiffy (physics) | 0.003 s | The amount of time light takes to travel one fermi (about the size of a nucleon) in a vacuum. | |

myriominute | 0.006 s | ||

centijiffy (electronics) | 1/6000 s to 1/5000 s | ||

microhour | 0.0036 s | 3 milliseconds and 6 microseconds | |

centisecond | 0.01 s | used on some stopwatches | |

dwink | 0.0185 s | commonly found on the internet | |

decijiffy (electronics) | 1/600 s to 1/500 s | ||

third | 1/60 s | medieval unit of time | |

nanoannum | 10^{-9} years | 31.5569 milliseconds | |

milliminute | 0.06 s | ||

microday | 0.0864 seconds | ||

decisecond | 0.1 s | used on some stopwatches | |

jiffy (electronics) | 1/60 s to 1/50 s | ||

bijiffy (electronics) | 1/30 s to 1/25 s | ||

trijiffy (electronics) | 1/20 s to 1/10 s | ||

quadjiffy (electronics) | 4/60 s to 4/50 s | ||

quintjiffy(electronics) | 5/60 s to 5/50 s | ||

wink | 0.222 seconds | commonly found on the internet | |

myriohour | 0.36 seconds | ||

semisecond | 0.5 seconds | ||

centiminute | 0.6 s | ||

microweek | 0.6048 s | ||

second / unisecond / leap second | 1 s | SI base unit | |

decajiffy (electronics) | 1/6 s to 1/5 s | ||

bisecond | 2 seconds | ||

micromonth | 2.62974 s | ||

trisecond | 3 seconds | ||

millihour | 3.6 seconds | ||

quadrasecond / tetrasecond | 4 seconds | ||

quintsecond / pentasecond | 5 seconds | ||

deciminute / hexasecond | 6 seconds | ||

heptasecond | 7 seconds | ||

instant / octasecond | 8 seconds | commonly found on the internet | |

myrioday | 8.64 seconds | ||

nonasecond | 9 seconds | ||

decasecond | 10 seconds | ||

hectojiffy (electronics) | 10/6 s to 2 s | ||

hendecasecond | 11 seconds | ||

dodecasecond | 12 seconds | ||

triadecasecond | 13 seconds | ||

tessaradecasecond | 14 seconds | ||

quindecasecond / pentedecasecond | 15 seconds | ||

vigintisecond | 20 seconds | ||

trigintisecond | 30 seconds | ||

microannum | 10^{-6} years | 31.5569 seconds | |

centihour | 36 seconds | ||

quadragintisecond | 40 seconds | ||

quinquagintisecond | 50 seconds | ||

minute60 seconds | |||

septagintisecond | 70 seconds | ||

myrioweek | 1.008 minutes | ||

octingintisecond | 80 seconds | ||

milliday | 86.4 seconds | About 1 minute and 26.4 seconds | |

moment | 90 seconds | medieval unit of time | |

hectosecond | 100 seconds | 1 minute and 40 seconds | |

myriomonth | 0.0001 months | ||

biminute | 2 minutes | ||

kilojiffy (electronics) | 100/6 s to 20 s | ||

triminute | 3 minutes | ||

duhectosecond | 200 seconds | 3 minutes and 20 seconds | |

quadraminute | 4 minutes | ||

quintminute | 5 minutes | ||

decihour | 6 minutes | ||

octminute | 8 minutes | ||

dekaminute | 10 minutes | ||

milliweek | 10.08 minutes | ||

ke | 14 minutes and 24 seconds | Also called centiday | |

tide | 15 minutes | ||

kilosecond | 1,000 seconds | 16 minutes and 40 seconds | |

vigintiminute | 20 minutes | ||

trigintiminute | 30 minutes | ||

millimonth | 0.001 months | ||

myrioannum | 0.0001 years | ||

hour60 minutes | |||

hectominute | 100 minutes | 1 hour and 40 minutes | |

centiweek | 1.68 hours | 1 hour and 48 minutes | |

bihour | 2 hours | ||

deciday | 2.4 hours | 2 hours and 24 minutes | |

myriasecond | 10,000 seconds | 2 hours, 46 minutes and 40 seconds | |

trihour | 3 hours | ||

nune | 3.5 hours | commonly found on the internet | |

megajiffy (electronics) | 100000/6 s to 20000 s | 4.62963 hours | |

quinthour | 5 hours | ||

sexahour | 6 hours | ||

centimonth | 0.01 months | 7.3048439814815 hours | |

milliannum | 0.001 years | 8.76581 hours | |

dekahour | 10 hours | ||

demiday | 12 hours | ||

kilominute | 1,000 minutes | 16 hours and 40 minutes | |

deciweek | 16.8 hours | 16 hours and 48 minutes | |

day24 hours | longest unit used on stopwatches and countdowns | 1 day or 24 hours | |

biday | 2 days | ||

triday | 3 days | ||

decimonth | 0.1 months | 3.04368 days | |

centiannum | 0.01 years | 3.65242 days | |

quadraday | 4 days | ||

hectohour | 100 hours | 4 days and 4 hours | |

pentaday | 5 days | ||

myriaminute | 10,000 minutes | ||

week7 days | Also called sennight | ||

dekaday | 10 days | 10 days | |

megasecond | 1,000,000 seconds | About 11.6 days | |

fortnight | 2 weeks | 14 days | may not be common |

lunar month | 27 Days 4 hours 48 minutes to 29 days 12 hours | Various definitions of lunar month exist. | |

quadraweek | 28 days | ||

month28 to 31 days | 30.4368 days | ||

deciannum | 1.2 months or 36.5 days | 1 month, 5 to 8 days, and 12 hours | |

kilohour | 1,000 hours | 1 month, 13 to 16 days, and 16 hours | |

dekaweek | 70 days / 10 weeks | ||

quarter and season | 3 months | It is called season if it is based on TV or weather temperature, otherwise it is called quarter | |

hectoday | 100 days | 3 months and 8 to 11 days | |

decafortnight | 140 days | 4 months and 20 days (assuming 30 days per month) | |

dekamonth | 10 months | ||

novemquadraweek | 49 weeks | was mentioned in metric time | |

duodekamonth | 12 months | ||

year12 months or 365 days | |||

common year / original year / non-leap year / normal year / no leap year / exceptional common year / non-century leap year / no century leap year | 365 days | 52 weeks + 1 day | |

tropical year | 365 days 5:48:45.216 hours | average | |

Gregorian year | 365 days 5:49:12 hours | average | |

sidereal year | 365 days 6:09:09.7635456 hours | ||

non-leap year | 365.24 days | ||

mean year | 365.25 days | ||

Julian year | 365.3 days | ||

leap year / non-common year / no common year / century leap year / intercalary year / bissextile year / non-exceptional common year / no exceptional common year | 366 days | 52 weeks + 2 days | |

myriahour | 10,000 hours | ||

hectoweek | 700 days / 100 weeks | ||

tricosamonth | 23 months | ||

biennium | 2 years | A unit of time commonly used by legislatures | |

megaminute | 1,000,000 minutes | About 696 days | |

kiloday | 1,000 days | 2 years, 8 months, 27 days the other | |

triennium | 3 years | ||

leap cycle | 3 common years | ||

quadrennium | 4 years | ||

lustrum / quinquennium | 5 years | ||

sexennium | 6 years | ||

septennium | 7 years | ||

octennium | 8 years | ||

hectomonth | 100 months | About 8 years and 4 months | |

novennium | 9 years | ||

decade | 10 years | ||

Indiction / quindecennium | 15 years | ||

generation | 17-35 years | ||

kiloweek | 7,000 days / 1,000 weeks | ||

score | 20 years | ||

myriaday | 10,000 days | ||

gigasecond | 1,000,000,000 seconds | About 31.7 years | |

jubilee | 50 years | ||

kilomonth | 1,000 months | About 83 years and 4 months | |

century | 100 years | ||

megahour | 1,000,000 hours | About 114.12 years | |

bicentennium | 200 years | ||

tricentenium | 300 years | ||

myriaweek | 70,000 days / 10,000 weeks | ||

myriamonth | 10,000 months | ||

millennium | 1,000 years | also called "kiloannum" | |

gigaminute | 1,000,000,000 minutes | About 1,902 years | |

megaday | 1,000,000 days | About 2,737.918 years | |

myriaannum / deca-millennium | 10,000 years | ||

megaweek | 7,000,000 days / 1,000,000 weeks | ||

terasecond | 1 trillion seconds | About 31,700 years | |

megamonth | 1,000,000 months | About 83,000 years and 4 months | |

deca-myriaannum / centa-millennium | 100,000 years | ||

gigahour | 1,000,000,000 hours | About 114,120 years | |

age and megaannum | 1,000,000 years | ||

teraminute | 1 trillion minutes | About 1,902,000 years | |

gigaday | 1,000,000,000 days | About 2,737,918 years | |

epoch | 10,000,000 years | ||

gigaweek | 7,000,000,000 days / 1,000,000,000 weeks | ||

petasecond | 1 quadrillion seconds | About 3.17 epochs | |

gigamonth | 1,000,000,000 months | About 83,000,000 years and 4 months | |

era | 100,000,000 years | ||

terahour | 1 trillion hours | About 114,120,000 years | |

galactic year | Approximately 2.3 eras | The amount of time it takes the Solar System to orbit the center of the Milky Way Galaxy one time. | |

eon | 500,000,000 years | Also "An indefinite and very long period of time" | |

gigaannum | 1,000,000,000 years | ||

petaminute | 1 quadrillion minutes | About 1,902,000,000 years | |

teraday | 1,000,000,000,000 days | About 2,737,918,000 years | |

teraweek | 7 trillion days / 1 trillion weeks | ||

exasecond | 1 quintillion seconds | roughly 31.7 billion years, more than twice the age of the universe on current estimates | |

teramonth | 1,000,000,000,000 months | About 83,000,000,000 years and 4 months | |

petahour | 1 quadrillion hours | About 114,120,000,000 years | |

teraannum | 1 trillion years | ||

examinute | 1 quintillion minutes | About 1.902 trillion years | |

petaday | 1 quadrillion days | About 2,737,918,000,000 years | |

petaweek | 7 quadrillion days / 1 quadrillion weeks | ||

zettasecond | 1 sextillion seconds | About 31.7 trillion years | |

petamonth | 1 quadrillion months | About 83,000,000,000,000 years and 4 months | |

exahour | 1 quintillion hours | About 1.1412 x 10^{14} years | |

petaannum | 1 quadrillion years | ||

zettaminute | 1 sextillion minutes | About 1.902 quadrillion years | |

exaday | 1 quintillion days | About 2.737918 quadrillion years | |

exaweek | 7 quintillion days / 1 quintillion weeks | ||

yottasecond | 1 septillion seconds | About 31.7 quadrillion years | |

examonth | 1 quintillion months | About 83 quadrillion years and 4 months | |

zettahour | 1 sextillion hours | About 1.1412 x 10^{17} years | |

exaannum | 1 quintillion years | ||

yottaminute | 1 septillion minutes | About 1.902 quintillion years | |

zettaday | 1 sextillion days | About 2.737918 quintillion years | |

zettaweek | 7 sextillion days / 1 sextillion weeks | ||

xennasecond | 1 octillion seconds | About 31.7 quintillion years | |

zettamonth | 1 sextillion months | About 83 quintillion years and 4 months | |

yottahour | 1 septillion hours | About 1.1412 x 10^{20} years | |

zettaannum | 1 sextillion years | ||

xennaminute | 1 octillion minutes | About 1.902 sextillion years | |

yottaday | 1 septillion days | About 2.737918 sextillion years | |

yottaweek | 7 septillion days / 1 septillion weeks | ||

dakasecond | 1 nonillion seconds | About 31.7 sextillion years | |

yottamonth | 1 septillion months | About 83 sextillion years and 4 months | |

xennahour | 1 octillion hours | About 1.1412 x 10^{23} years | |

yottaannum | 1 septillion years | ||

hendasecond | 1 decillion seconds | About 31.7 septillion years | |

dakaminute | 1 nonillion minutes | About 1.902 septillion years | |

xennaaday | 1 octillion days | About 2.737918 septillion years | |

xennaweek | 7 octillion days / 1 octillion weeks | ||

xennamonth | 1 octillion months | About 83 septillion years and 4 months | |

dakahour | 1 nonillion hours | About 1.1412 x 10^{26} years | |

xennannum | 1 octillion years | ||

hendaminute | 1 decillion minutes | About 1.902 octillion years | |

dakaday | 1 nonillion days | About 2.737918 octillion years | |

dakaweek | 7 nonillion days / 1 nonillion weeks | ||

dakamonth | 1 nonillion months | About 83 octillion years and 4 months | |

hendahour | 1 decillion hours | About 1.1412 x 10^{29} years | |

dakaannum | 1 nonillion years | ||

hendaaday | 1 decillion days | About 2.737918 nonillion years | |

hendaweek | 7 decillion days / 1 decillion weeks | ||

cosmological decade / deca-dakaannum | 10 nonillion years | 10 times the length of the previou cosmological decade, with C | |

hendamonth | 1 decillion months | About 83 nonillion years and 4 months | |

deca-cosmological decade / centa-dakaannum | 100 nonillion years | ||

hendaannum | 1 decillion years | ||

decillion | is equal to 1 followed by 33 zeros, or a billion trillion trillions | ||

quindecillion | it's equal to 1 followed by 48 zeros, or a trillion trillion trillion trillions | ||

multicosmological year / melleni-cosmological decade | 1 tredecillion years |