[[quoteright:350:http://static.tvtropes.org/pmwiki/pub/images/infinity_4968.jpg]]
[[caption-width-right:350:You could say it's... [[{{Pun}} loopy]].]]

->''"Figure eight as double four,\\
Figure four as half of eight.\\
If you skate, you would be great\\
If you could make a figure eight.\\
That's a circle that turns 'round upon itself...\\
Place it on its side and it's a symbol meaning Infinity..."''
-->-- ''WesternAnimation/SchoolhouseRock'', "Figure Eight"

When a ''big'' number just isn't ''BIG'' enough, writers turn to the Infinite. Rarely do writers touch upon on its immeasurable nature, [[SciFiWritersHaveNoSenseOfScale sometimes even assigning it to something that's just really large]], although that version is usually PlayedForLaughs or is just the closest approximation they (or the characters) could find. The most horrendous use is when a writer implies something may be MoreThanInfinite, which again [[FridgeLogic makes no sense]] when you factor in the fact that infinity is a limitless value instead of an actual number that you can add to [[note]]Although it should be noted that there are degrees of infinity; the number of points in a line is less infinite (has a smaller cardinality) than the number of curves that can be drawn on a plane, but more infinite than the number of integers; this still doesn't make most uses of "more infinite than infinite" make any kind of sense, though. Mathematicians have explained to think of infinite as a ''process'', not a ''value'', whatever that means. In addition to the cardinal numbers infinitys, which is about what can be put in a one to one matching with that, and the limit infinity, which is for when something increases without bound, there are also different infinities in the ordinal numbers, which deal with the order of a thing. In the ordinal numbers, each ordinal number is the set of all ordinal numbers less than it, so 5 is the set of 0 1 2 3 and 4. the first infinity in the ordinal numbers is the set of all nonnegative integers, and is represented as a lowercase omega. If you then take the set of all non negative integers, as well as omega, you get omega plus one, and so on. and then you can get to omega plus omega (omega times 2), and eventually omega times omega, (omega squared), and eventually omega to the omega. And you can still always add one. [[/note]].

See all related NumberTropes, [[{{Pun}} which can't possibly compare]]. You can however, compare a MouthfulOfPi, which is Infinite in its own way as it goes on and on and..., well, you get the idea. And if you were wondering, that sideways 8 thing is called a Lemniscate.

If you were looking for the TabletopGame, you can find it [[TabletopGame/{{Infinity}} here]]. Also not to be confused with [[Music/{{INFINITE}} the Korean boy band with the same name]].

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!'''Examples'''

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[[folder: Anime and Manga ]]

* One of the themes in the ''Aquarion'' franchise, as the various titular mecha from ''Anime/GenesisOfAquarion'', ''Anime/AquarionEvol'', and ''Anime/AquarionLogos'' all have the power to grow and create new powers infinitely thanks to their pilots. ''Logos'' takes this a step forward by having a monster representing nothingness [[DidYouJustPunchOutCthulhu being punched to death at the half way point]].
* In TheMovie of ''Anime/TengenToppaGurrenLagann'', the final, almighty clash between the title mecha and the copycat villain is so powerful it absorbs the pocket universe around it, zooming out until the scene shows no more than two intertwined, struggling specks in a featureless void, which briefly become an infinity symbol before everything explodes back into the action. What this is supposed to actually mean is anyone's guess.
* In ''Anime/SpaceRunawayIdeon'', when the Solo crew reaches Earth, they use its most powerful computer to estimate Ide's power output. As they look at the screen, the number on it begins to rise exponentially before being replaced by a single symbol: infinity.
* ''Anime/YuGiOh'':
** An anime-only villain summons a monster with infinite attack during the final rounds of the duel, that has an side effect that causes him to lose automatically should it be destroyed. The Pharaoh defeats him by summoning another monster with infinite attack that cannot be destroyed by battle.
** Obelisk the Tormentor has an effect that gives him infinite attack by sacrificing the other two god cards.
* In ''Manga/MyHeroAcademia'', during a super-powered fitness test, the characters have to throw a ball as far as possible. The teacher has a device/app that instantly determines the distance to wherever the ball lands. Ochako, who can negate gravity for any object she touches, [[ATwinkleInTheSky tosses the ball into space]]. The measurement tool [[RuleOfFunny somehow understands this bizarre situation]] and displays an infinity symbol.

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[[folder: Comic Books ]]

* In an issue of Archie's ''ComicBook/SonicTheHedgehog'' comic, Sonic collects his millionth (or billionth?) ring and has a DisneyAcidSequence that eventually leads to him running around a giant ring shaped like the infinity symbol. You might call it a sort of "[[{{Pun}} Mobius strip]]".
* Marvel has ComicBook/TheInfinityGauntlet, [[CosmicKeystone a glove]] which gave its user near (but not quite) infinite powers.
* ''ComicBook/CrisisOnInfiniteEarths'', and its sequel ''ComicBook/InfiniteCrisis'' are prime examples. Somewhat justified in the former where all of the multiverse is being threatened.

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[[folder: Film ]]

* Near the end of the Australian film ''TheBank'', the main characters are watching a [[ComputerEqualsMonitor computer screen]] when a large and ominous-looking infinity sign pops up, at which point one of the characters remarks, [[spoiler:"There is no bank."]] It's part of a computerised futures calculation program written by the protagonist [[spoiler:as a means of revenge against the unscrupulous title bank that drove his [[DrivenToSuicide father to suicide]]]].

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[[folder: Literature ]]

* The concept of The Infinite as an actual speed is played for all the absurdity it is worth by Creator/DouglasAdams in ''Franchise/TheHitchhikersGuideToTheGalaxy'' with the Infinite Improbability Drive.
* In ''Literature/{{Necroscope}}'' Harry Keogh (and his heirs) gain access to the Moebius continuum (with its ability to time travel and teleport) by being able to calculate the infinite length of a moebius strip as a finite number.

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[[folder: Live Action TV ]]

* Infinity is used as a substitute for "really, really, fast" in the ''Series/StarTrekVoyager'' episode "[[CanonDiscontinuity Threshold]]". In stark contrast to the Douglas Adams example above, it is played painfully straight prompting a near meltdown by WebSite/SFDebris in his review who pointed out that "Infinite" speed is not something you can accelerate towards.
* Parodied in ''Series/LookAroundYou'''s first episode "Maths".
-->'''Narrator:''' What's the largest number you can think of?\\
'''Girl:''' Um... a hundred thousand?\\
'''Man:''' Nine hundred and ninety-nine thousand.\\
'''Older man:''' A million.\\
'''Narrator:''' In actual fact, it's neither of these. The largest number is about 45 billion. Although mathematicians suspect there may be even ''larger'' numbers.

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[[folder: Music ]]

* The band Hoobastank has their name often stylized as h∞bastank, which contains an Infinite symbol.

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[[folder: Tabletop Games ]]

* ''MagicTheGathering'' mocks the concept with the [[JokeItem Mox Lotus]], a card from the unofficial [[SelfParody]] set, ''Unhinged''. Parodying the [[GameBreaker infamously broken]] Black Lotus and Mox cards, Mox Lotus could be tapped for infinite colorless mana. Additionally, there are numerous official card combos that can be used to gain infinite mana/life points/creatures, and a number of decks are built around assembling those combos and using them to either destroy the opponent or force them to concede.

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[[folder: Video Games ]]

* DWN-∞ is the serial number of Zero of the ''VideoGame/MegaManX'' series; it's implied that his creator sees Zero as having an unlimited potential.
* ''VideoGame/MetalGearSolid4GunsOfThePatriots'' has it implied in its infamous "Zero becomes one, one becomes 100" and it will continue from there and taking back it to one goes back to 100 again in the [[ContemplateOurNavels navelgaze]] during the ending by [[spoiler:Big Boss]] when [[spoiler:he euthanizes Major Zero]].
-->'''[[spoiler:Big Boss]]''': "Everything has its beginning... But doesn't start at 'one.' It starts long before that... In chaos, the world is born... from zero. The moment zero becomes one is the moment the world springs to life. One becomes two... Two becomes 10... 10 becomes 100. Taking it all back to one solves nothing. So long as zero remains... One... will eventually grow to 100 again."
* ''VideoGame/SonicForces'' introduces a villainous and ''extremely'' powerful character named Infinite. The infinity-symbol is also heavily associated with him.

[[/folder]]

[[folder: Web Original ]]

* Wiki/TVTropes itself does it: InfinityPlusOneSword, InfinityMinusOneSword, InfinityPlusOneElement, MoreThanInfinite. As Infinity is not a number (being, ya know, infinite), adding or substracting one means nothing, meaning that infinity +1 and infinity -1 are still infinity and thus the same thing.[[note]]While infinity +1 and infinity -1 are the same in the cardinal numbers (the set of integers with one missing or with another element added has the same number of values: aleph null) In the ordinal numbers, while 1+infinity (called omega instead of infinity to distinguish from other infinities) is still omega, omega plus 1 is its own number (called omega plus 1). The surreal numbers have both omega + 1 and omega - 1 (though the latter might not behave quite how one expects). If someone makes a statement about infinity, it might be useful to make sure you know what infinity or what type of infinity they are talking about. [[/note]]
* One of {{WebVideo/Phelous}}' reviews has him call out the opening narrator for claiming that this story "is still happening" because "this story is about time, and time has no ending.". However, upon checking the DVD box label, he finds that the film has a running time of "∞", causing him to freak out.

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[[folder: Western Animation ]]

* ''WesternAnimation/JusticeLeagueCrisisOnTwoEarths'' has Owlman ponder that if each choice any person makes in turn creates another world to go with the TheMultiverse Theory presented in the movie, that means 'Billions of people making billions of choices create infinite worlds' - It's an impressively large number of worlds made if such was the case, but it still isn't Infinite.

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[[folder: Real Life ]]

* Based on studies of the cosmic microwave background, that among other things show a flat (with no measurable curvature) Universe, the Universe is typically described as being infinite[[note]]This type of Universe is inmune to paradoxes as the [[https://en.wikipedia.org/wiki/Olbers_paradox Olbers paradox]], as is finite in age and expanding -better said, accelerating its expansion-[[/note]]. However there's a considerable difference between "infinite" and "so humongous and so young that we cannot determine its actual size and shape", and some [[AlienGeometries finite shapes]] are also flat.
* Infinity has been the object of a great deal of study in mathematics since the late 1800s when Georg Cantor first provided a rigorous formal method of working with infinities.
* Graham's Number is ''not'' infinite, but it ''is'' very, ''very'' large. So large that if, in fact, you could write one digit in a space the size of a proton, the observable universe would not be large enough to write the ''number of digits'' it has, let alone the number itself. Unless you are yourself a mathematician, g1, the first step (of 64) on the road to Graham's Number, is probably larger than what you think of as "infinity". And even Graham's Number in its full glory is ''tiny'' compared to TREE(3).
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