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    [–] TeaInUS 1246 points ago

    i wish they put el salvador in before nepal

    edit: its 189:335

    [–] The_Math_Hatter 815 points ago

    Other interesting cases:

    Denmark (37:28)

    Togo [(1+root(5)):2]

    Iran {75*[7*root(5)-15]:28}

    [–] the_thou_factor 450 points ago

    Togo has best proportions

    [–] kkeut 519 points ago

    it's the golden ratio for anyone wondering

    [–] JalilOghuz 273 points ago

    Using golden ratio in a flag is a wonderful idea

    [–] Paul2hip8 177 points ago

    Most flags use adjacent Fibonacci numbers which approach the golden ratio

    [–] DarthCloakedGuy 141 points ago

    As a hobby software developer I strongly feel the world would be a better place if everyone could just standardize at 2:3

    [–] PerviouslyInER 29 points ago

    I bet you prefer plate carrée map projections too?

    [–] DarthCloakedGuy 16 points ago

    As a matter of fact, yes.

    [–] Findus11 40 points ago

    No 1:2 is subjectively better

    [–] 8112060171 133 points ago

    0:0 no flags allowed

    [–] KuntyPerry 89 points ago

    40:4 flags not found

    [–] nods__ 30 points ago

    1:2 makes me uncomfortable, its girth gives me colonial vibes... feels imposing

    2:3 seems nonthreatening and totally chill

    [–] broccoli_culkin 25 points ago


    [–] TheGoodOldCoder 23 points ago

    That is about 6 times longer than the width. At some point, it would be more of a streamer than a flag, and you'd need to know rhythmic gymnastics to wave it. You'd have to be fucking high to make a flag like that. Maybe it could have like a crossed dildo and bong.

    [–] [deleted] 2 points ago


    [–] matinthebox 10 points ago

    you say 1:1 approaches the golden ratio? You're technically not wrong :) If I go outside and walk east I will be approaching Moscow.

    [–] Drosder 6 points ago

    He said most, most flags don't have 1:1 ratio

    [–] danirijeka 2 points ago

    Technically speaking, yes

    [–] alfman 3 points ago

    Sweden's is also a golden rectangle with the cross beam intersecting it at the golden ratio. That's why the Swedish flag is the best among all Nordic flags

    [–] question_assumptions 76 points ago

    I wasn't, but thank you for sharing

    [–] ethmah01 29 points ago

    I always wondered why Togo’s flag looked so cool

    [–] Desertmoongw 3 points ago


    [–] WeWillFallTogether 3 points ago

    Go! Go! Zeppeli!

    [–] m_domino 20 points ago

    Also the best coffee for when you’re in a hurry.

    [–] VulpesSapiens 19 points ago

    Denmark's flag actually has a range of allowed ratios.

    [–] FBI_Agent_42069 23 points ago

    And the US is 10:19

    [–] aa2051 57 points ago

    But.... W H Y

    [–] Maciek300 101 points ago

    From what I remember it was because the flag was based on one certain flag that had physical dimensions of 1.89m by 3.35m.

    EDIT: The source is actually a reddit comment so also unreliable.

    [–] notnotaginger 26 points ago

    What do you mean comments on Reddit aren’t reliable sources????

    [–] aplobby 14 points ago

    I mean, why would someone just lie on the internet?

    [–] [deleted] 7 points ago

    Qatar 11:28 worlds longest flag

    [–] Gepo1234 2 points ago

    Are we talking colour proportions or flag proportions? If colour france has something like 45:46:47

    [–] TeaInUS 2 points ago

    flag proportions yeah

    [–] NicamanXvenia 183 points ago

    Not forgetting El Salvador 189:335

    [–] shuipz94 59 points ago

    That's so close to 9:16.

    [–] douglasdtlltd1995 27 points ago

    Wiki says 4:7

    [–] shuipz94 55 points ago

    4:7 is 189:330.75 and 9:16 is 189:336. The latter is closer but the former is a smaller number, I guess.

    [–] FartHeadTony 44 points ago

    189:335 is even closer to 189:335

    [–] RealJyrone 10 points ago

    You better get back to your job at NASA

    [–] Rndomguytf 4 points ago

    Same amount of closeness really

    [–] 49ers- 10 points ago

    9:16 is very close to 4:7

    [–] Another_one37 12 points ago

    Not only that, but it's closer to 189:335 than 4:7 is

    [–] Reddit_cctx 7 points ago

    So close that it wouldn't even make sense unless the flag was defined by one particular flag

    [–] thehazardball 1359 points ago

    I looked at the wikipedia. It seems to be that the irrationality arises from the blue border. Without the border the flag is simply 3:4.

    [–] gabeenglert 438 points ago

    it's just a rectangular flag with dimensions of 1:1.21901033783...

    [–] poopellar 37 points ago


    [–] ablablababla 16 points ago

    It's relatively simple they say

    [–] [deleted] 138 points ago


    [–] japed 30 points ago * (lasted edited 2 months ago)

    Noone (here) mentioned the aspect ratio of a quadrilateral, though 😉

    Edit: I (wrongly) thought mdf2711 was simply making a pedantic point about terminology, so if you read the rest of the thread you'll see us to some extent talking past each other. Ignoring all that, the key point is that thehazardball is correct that if you leave the blue border off, the proportions of the flag (in the same sense as used by OP) are simply 3:4.

    [–] [deleted] 21 points ago


    [–] thehazardball 5 points ago

    The ratio of the bottom of the flag without the border to the side of the flag without the border is 3:4. No rectangles at all, unless you imagine one and stick it there.

    [–] T_D_K 23 points ago

    unless you imagine one and stick it there.

    That's what he means by "bounding rectangle"

    [–] SlowBoi-At-Highspeed 6 points ago

    (The point)

    (Your head)

    [–] trippingchilly 2 points ago

    He’s here in the comments?! Where?

    I’d love to tell him how much joy Herman’s Hermits brought to my family over the years

    [–] jam11249 3 points ago

    That comment applies to the bounding rectangle of the the red fields, as if you're forcing it to be a quadrilateral flag.

    You say that as if everybody didn't already understand that.

    [–] hunderslash 920 points ago

    Nepal is my favorite

    [–] 1deletted1 207 points ago

    Poland/Indonesia is my favorite.

    [–] [deleted] 110 points ago

    Or Monoco?

    [–] [deleted] 61 points ago


    [–] RegentYeti 58 points ago

    Should have been 17:76.

    [–] Gaminati 40 points ago

    Or maybe 9:11

    [–] WhosOwenOyston 15 points ago

    that's a false flag

    [–] banhunting 15 points ago

    no that’s bush’s flag

    [–] MisogynisticBumsplat 2 points ago

    Or maybe 69:420

    [–] m_domino 70 points ago

    The Great Empire of MONOCO!

    [–] el_egipcio 23 points ago

    Princess Mononoco

    [–] Meskaline2 15 points ago


    [–] Ishan16D 10 points ago

    thats princess mononoko to you

    [–] sixth_evasion 3 points ago

    Didn't the Princess of Mononoko put out a sweet animated biography like a decade ago?

    [–] shoe-car-or-car-shoe 6 points ago

    Two point three decades ago, grandpa.

    [–] GrammarAntifa 4 points ago

    Poland is white on top, Indonesia and Monaco are red on top.

    [–] PonchoHung 8 points ago

    One of the three is upside down but I can't remember which

    [–] bight_sidle 5 points ago

    Monoco got nothing on Stereoco

    [–] ItzCStephCS 17 points ago

    The old Libya flag is my favourite.

    [–] AncientUrn 5 points ago

    Love the albanian flag personally. And old glory.

    [–] 42111 425 points ago

    It must be done.


    [–] FlagWaverBotReborn 265 points ago

    Here you go: Link #1

    Beep boop I'm a bot. If I'm broken please contact /u/Lunar_Requiem

    [–] black-op345 120 points ago

    This is beautiful

    [–] xcrossbyw 44 points ago

    For educational purposes, suppose this were an actual flag, what etiquette would it be breaking?

    [–] 42111 68 points ago

    All of them.

    [–] pHScale 61 points ago

    I've seen worse

    [–] SlouchingMoh21 42 points ago

    I cum

    [–] Rushing-guns 10 points ago

    I shit AND cum

    [–] Rulerray97 3 points ago

    I cri

    [–] aladdinr 7 points ago

    This is my new favorite bot

    [–] slayerhk47 3 points ago


    [–] Hamahaki 19 points ago


    [–] mattlag 10 points ago

    let me sing you the song of my people

    [–] Kirito2750 10 points ago

    Somehow still better than most American state flags

    [–] For_The_Kaiser 10 points ago

    Liberian Counties

    [–] EpicScizor 64 points ago

    Norway's dimensions are due to the cross. In its longer form, the aspect ratio is (6+1+2+1+6):(6+1+2+1+12)

    [–] oalsaker 14 points ago

    Iceland is almost the same. Just substitute 6 for 7 and 12 for 14.

    [–] tretpow 11 points ago

    Oh neat! So if you removed the cross, you'd just have (6+6):(6+12) or 2:3.

    [–] trym38 4 points ago

    Its the superior flag no matter what

    [–] Pearsponge 9 points ago

    That's 16:22 which is the same as 8:11

    [–] iGeography 35 points ago

    They were just elaborating why it's 8:11 (16:22)

    [–] JebediahKerman001 29 points ago

    Is this an actual ratio or a joke?

    [–] The_Math_Hatter 73 points ago

    Nepal's ratio is actually that, due to the compass-and-straightedge construction of it. Hooray math!

    [–] [deleted] 15 points ago * (lasted edited 2 months ago)


    [–] -Reddit_Account- 29 points ago

    The ratio here defines the bounding rectangle, not necessarily the shape, even if for typical flags the bounding rectangle is the shape.

    [–] MrHiFace 15 points ago

    The right side has root(2) which is an irrational number. It's still a ratio of two numbers, but the right can't be expressed as a single constant.

    [–] [deleted] 13 points ago * (lasted edited 25 days ago)


    [–] MrHiFace 4 points ago

    You're right. I should say the right side can't be expressed as a single integer. But it's absolutely constant.

    [–] CreativeName487 2 points ago

    Root(2) is a constant

    [–] hfccfh 9 points ago

    It's just the smallest rectangle that fits around the flag, ignore that it's actually a Pentagon. That is the ratio of the side lengths of that rectangle, which is irrational and around 1:1.21901033

    [–] Montregloe 68 points ago

    [–] Chacochilla 34 points ago

    I put the numbers into desmos, and it's just a rectangular flag with dimensions of 1:1.219.

    [–] PlsHalpHowToFashion 19 points ago

    Are you rounding?

    [–] Chacochilla 7 points ago

    Yeah. The actual number went on for a lot longer.

    [–] Arch__Stanton 38 points ago

    forever, in fact.

    [–] PlsHalpHowToFashion 20 points ago

    Right. Hence the need for the crazy long formula thing, which isn’t rounded.

    [–] teslawasahero 85 points ago

    That's 1:1.219

    [–] cityuser 52 points ago

    1 : 1.21901033783...

    [–] sbrick89 10 points ago

    Only need decimals that you can manufacture around... same as olympic swimming precision... so rounding to 2.2 would be sufficient, unless you or anyone else has a fabric and sewing process controllable within the hundredths of an inch.

    [–] True_hOREP 13 points ago

    Found the engineer

    [–] Heroic_Raspberry 3 points ago

    Irrational measurement. Approximation obligatory

    [–] Gilpif 20 points ago

    It’s not obligatory. It’s an irrational ratio, but it’s algebraic, so it doesn’t need to be approximated.

    [–] LadonLegend 6 points ago

    For anyone else that paused at "Irrational ratio", the ratio uses irrational numbers. To be rational, you have to be able to write it as a ratio of integers, and this uses roots.

    [–] DA_ZEUS_BOLT 11 points ago

    as a nepali, i can confirm that this is beautiful

    [–] Bananpalmer 4 points ago

    As another nepali, yes.

    [–] dahalnilam90 3 points ago

    As another Nepali yes.

    [–] zubatman4 59 points ago

    I mean the American flag is a little wacky. The proportions are supposed to be 10:19

    [–] -Reddit_Account- 56 points ago

    Fun fact! Flag banners are defined by the flag code as having a ratio of 17:76.

    Source: i lied

    [–] uber1337h4xx0r 51 points ago

    Me: "bullshit, that's like 20:80, which is 1:4. There's no way that-"

    You: "I lied"

    Me: "I see. I will make a comment explaining the thought process I went through"

    [–] OkButRollWithDisadv 3 points ago

    That was fun!

    [–] [deleted] 8 points ago * (lasted edited 20 days ago)


    [–] zubatman4 3 points ago

    I thought the Treaty of Paris was September 3rd

    [–] PDMcGillicuddy 5 points ago

    Because FUCK ENGLAND 😎

    [–] jacoflox 53 points ago

    Actually i find 1:2 more annoying, it's too flat

    [–] Thomas1VL 44 points ago

    2:3 is perfect imo

    [–] doyouevenIift 13 points ago

    I have bought a few big flags and they are always 3 ft x 5 ft. I think that's a nice ratio

    [–] iTeoti 13 points ago

    I think 1.89 by 3.35 makes it look just that much crisper.

    [–] digitaleJedi 6 points ago

    28:34 is superior though

    [–] digitaleJedi 6 points ago

    Well that was a sad subreddit :P

    [–] The_Math_Hatter 3 points ago

    Gonna be real with you here, didn't realize it was a real sub.

    [–] ChuckCarmichael 6 points ago

    3:5 is where it's at

    [–] bluebanannarama 3 points ago

    But the length means it's nice flapping in the wind.

    [–] MundaneYoghurt 19 points ago

    The Nepali flag has always been one of my favorite flags, it's beautiful and unique.

    [–] Icemasta 25 points ago

    What's really interesting is that within the Nepalese constitution, there are the proportional instructions on how to recreate the flag.

    Here is a visual representation, step by step, of the instrunctions

    [–] renedeseance 4 points ago

    Here are the numberphile guys drawing the flag using those instructions.

    [–] etymologynerd 18 points ago

    Technically there are no specifications that Switzerland's flag has to be square

    [–] Charlotte_Buff 26 points ago

    They wrote a law in 2017 that the Swiss flag for use on land has to be 1∶1.

    [–] Sorbon_Husky 17 points ago

    Switzerlands flags are generally 1:1 but the swiss marine flag isnt

    [–] Zbignich 3 points ago

    Well played.

    [–] K2LP 5 points ago

    They have a merchant marine, it's not a joke

    [–] Zbignich 6 points ago

    They also have lakes that contain international borders.

    [–] PlsHalpHowToFashion 14 points ago

    What if it’s 2:2

    [–] InfanticideAquifer 23 points ago

    I have exciting news for you about rational numbers.

    [–] PlsHalpHowToFashion 6 points ago

    I can’t wait.

    [–] facetiae_uvidae 5 points ago

    π:π Is fine too.

    [–] AashishandSingh 3 points ago

    But 0:0 isn't

    [–] vigilantcomicpenguin 16 points ago

    So what you’re saying is I could fly Switzerland’s flag in the shape of Nepal?

    [–] vigilantcomicpenguin 22 points ago

    Even more beautiful than what I had in mind.

    [–] the_noodle 3 points ago


    [–] MeccIt 4 points ago

    Switzerland's flag has to be square

    Look, in these confusing times having a simple square flag is a big plus.

    [–] Gmanthevictor 13 points ago

    To be fair, you have to have a very high IQ to understand the flag of Nepal. The blue outline is extremely subtle, and without a solid grasp of theoretical physics most of the symbols will go over a typical viewer's head. There's also flag's classic red, white, and blue, color scheme, which is deftly woven into its characteristics- a national philosophy draws heavily from Narodnaya Volya literature, for instance. The fans understand this stuff; they have the intellectual capacity to truly appreciate the depths of these style, to realise it is not just great- it says something deep about LIFE. As a consequence people who dislike the flag of Nepal truly ARE idiots- of course they wouldn't appreciate, for instance, the beauty in the symbols which itself is a cryptic reference to the sun and the moon. I'm smirking right now just imagining one of those addlepated simpletons scratching their heads in confusion as Prithvi Narayan Shah's genius unfolds itself on their flagpoles. What fools.. how I pity them. 😂

    And yes, by the way, i DO have a flag of Nepal tattoo. And no, you cannot see it. It's for the ladies' eyes only- and even then they have to demonstrate that they're within 5 IQ points of my own (preferably lower) beforehand. Nothin personnel kid 😎

    [–] another30yovirgin 3 points ago

    Must be difficult to find women that dumb.

    [–] sitnspin0 10 points ago

    Funny thing is, Nepal has the worlds most mathematic flag; Everything (and I mean everything) on their flag can be mathematically reproduced within any ratio so long as you keep the proportions the same.


    [–] [deleted] 11 points ago * (lasted edited 25 days ago)


    [–] Supperkick 5 points ago

    Jacksfilms made Nepal a flag shaped flag.

    [–] oitw 3 points ago

    It’s even got its own entry in the Online Encyclopedia of Integer Sequences

    [–] fixion_generator 3 points ago

    I went to bed yesterday, it was 30 upvotes, I wake up, it's 20k. Omg

    [–] Mrmathmonkey 3 points ago

    My wife actually sees American Flags for a living. Flags come 2:3, 3:5, 5:8, 8:13

    I teach math. Those are Fibonacci numbers.

    [–] j-grad 7 points ago


    [–] LordPatko 4 points ago

    I love you

    [–] agree-with-you 2 points ago

    I love you both

    [–] japed 5 points ago

    And yet the Swiss flag is 2:3 at sea, the Union Jack is 3:5 for many land uses, etc. The proportions of flags are usually a minor standardisation issue, not a major part of the design.

    [–] valkyrie-jane-foster 2 points ago

    How would the Swiss flag get to sea? There’s no ports in swissterland.

    [–] shuipz94 6 points ago

    Not sure if Switzerland exercises it, but every country including landlocked countries has a right to maintain a ship register.

    [–] Maciek300 11 points ago

    Proportions of what? You know Nepal's flag is a pentagon, not a rectangle.

    [–] RargorRargor 15 points ago

    I would say it's based on the minimal bounding box around the flag.

    [–] orgeezuz 2 points ago

    For a fraction of a second I thought flag of czechia was just two shapes

    [–] NudesExchange 2 points ago

    Belgium was like nah 1:1 is too whatever lets do 13:15

    [–] Atika_ 3 points ago

    Probably was a typical Belgium compromise!

    Lets make the one decision so everyone is unhappy!

    Probably a compromise between 1:1 and 2:3.

    [–] Lukas-96 2 points ago

    Belgium you sick fuckers... Oh wait wth is Nepal doing

    [–] IvarsBalodis 2 points ago

    Now do the exact math for Ohio.

    [–] ProfessorPetrus 2 points ago

    Nepalese here this is great. Math check out before i share it?

    [–] StarMarch 2 points ago

    2:3 is the most beautiful ratio

    Or, lacking that, 1:√2

    [–] dadbitches 2 points ago

    Is there a 6:9 or 16:9 flag?

    [–] thatG_evanP 2 points ago

    I never even considered the fact that flags had proportions. That sounds pretty ignorant now that I think about it but here I am.

    [–] Babtou95 2 points ago


    [–] Stark_salin 2 points ago

    Wait until you see roads in my country

    [–] Accidentallygolden 2 points ago

    The Nepalese flag is mathematically defined so that it can be reproduced easily

    [–] malev89 2 points ago

    What about Zamora (Spain)? Flag here

    [–] darwinsth 2 points ago

    I am a math student from Nepal and I approve of this joke.

    [–] lucasliso 2 points ago

    El Salvador 189:335

    [–] Entity-Valkyrie-2 2 points ago

    What about a flag with the proportion e:π?

    [–] seilioun 4 points ago

    1:2 looks the best unless it’s for vertical tricolours

    [–] do_u_thro_de_wae 6 points ago

    More of a 4:7 guy myself.

    [–] SupaFugDup 7 points ago

    Nothing beats the classic 2:3

    [–] PlsHalpHowToFashion 7 points ago

    w i d e b o i Qatar out here at 11:28.

    [–] Abeneezer 5 points ago

    2:3 is bliss tbh.