this post was submitted on 14 Sep 2026
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Asklemmy

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[–] artifex@piefed.zip 87 points 1 month ago (2 children)

Originally it was because the ship carrying the official metric measures from France to the US in 1793 was captured by pirates. More recently it’s because there was a near-revolt when Jimmy Carter tried to reintroduce it in the 1970s in an attempt to make the US even slightly less regressive.

[–] yenahmik@lemmy.world 22 points 1 month ago (3 children)

That reminds me of a road in AZ that had signage in KM when I was a kid. I guess it was a part of this program and it never got changed back? It was always a mindfuck suddenly seeing kms instead of miles on road trips through the area.

[–] SkaveRat@discuss.tchncs.de 13 points 1 month ago (1 children)
[–] isyasad@lemmy.world 3 points 1 month ago

Interesting, I always thought it was because it goes straight to Mexico, so many people using it would prefer kilometer. Cool to see my local highway on Lemmy.

[–] artifex@piefed.zip 8 points 1 month ago (1 children)

There was a stretch of the Florida coast that had metric in the late 90s and early 2000s, but people kept stealing the speed limit signs. They also had a problem with people misunderstanding 100kph (about 60mph) and doing 100mph instead.

[–] RiderExMachina@lemmy.ml 5 points 1 month ago

“Misunderstanding”. They just wanted to speed

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[–] erusuoyera@sh.itjust.works 49 points 1 month ago (2 children)

Because the entire country has a foot fetish.

[–] green_goglin@thelemmy.club 11 points 1 month ago

Fact Check: TRUE ✅

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[–] Valthorn@feddit.nu 46 points 1 month ago

Technically they do. The US units are defined by the metric system, and they are full members of the Metre Convention since 1878.

[–] DarrinBrunner@lemmy.world 33 points 1 month ago (1 children)

Officially, we're the only ones still using imperial units. But, the British use a mash-up of units in their daily lives, as does Liberia and Myanmar.

Reagan pulled the plug on our attempted conversion in 1980.

We'll convert someday, probably after our imperial reign is over, somewhat fittingly.

[–] SpaceNoodle@lemmy.world 23 points 1 month ago* (last edited 1 month ago)

Except it's not imperial units, it's US customary. Similar names, different actual quantities.

[–] Tikiporch@lemmy.world 27 points 1 month ago (2 children)

USA uses both, just like the UK and Canada. It's standard in the states for...medicine, the military, science, and... two-liter beverage bottles.

[–] WolfLink@sh.itjust.works 3 points 1 month ago (4 children)

Soft drinks in general. A can is 255ml, a bottle is 500ml, a big bottle is 2L

[–] Tikiporch@lemmy.world 9 points 1 month ago (1 children)

Convenience store wise, a can of Coke is 12 ounces and a bottle is 20 ounces in the states. They have the volume in ml on the bottle though.

Grocery stores have 1l, 16.9oz, 12oz bottles, and 7.5oz cans.

It's all over the map.

[–] Jarix@lemmy.world 3 points 1 month ago (1 children)

Containers of Specific Volumes For industry.

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[–] huf@hexbear.net 21 points 1 month ago

because they industrialized before metricalization and it would've been incredibly expensive to convert all their machines and tooling to metric afterwards. same reason as the UK. a lot of places industrialized later, in metric from the start, and didnt have this problem.

and then they became the hegemon, and didnt have to convert, because fuck you, why should i cooperate with vassals.

the US will convert to metric when it sinks to the level it deserves and the customary units become a pain because nobody else is willing to deal with them and all the importable equipment is in metric.

[–] JollyG@lemmy.world 18 points 1 month ago (4 children)

The US uses the metric system. SI units are provided by Federal Government for almost every quantifiable product produced by a federal agency and its been like that for decades. Often they use a mix of customary and SI units, providing conversions between the two in official reports. Generally you see customary units communicated when work more directly impacts the general public with more technical work using the SI system. Many industrial fields use predominantly the metric system as is the case for medicine and many engineering fields.

The US does not use, exclusively, the metric system because many units had been adopted by convention prior to the formalization of the modern international SI system and for cultural or historic reasons people don't want to change.

That's not so different from other places where measurement systems in common use are often retained.

The metric system debate is, for me, one of the most interesting cultural bugbears on the internet. Because it does not really matter that much what system of measurement a nation uses, its really not going to impact your life that much at the end of the day. Particularly in the modern era where conversion is as trivial as looking up a calculator online. But for whatever reason people get huffy about the metric system.

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[–] terminal@lemmy.ml 16 points 1 month ago (2 children)

Not the only country Liberia uses the imperial system too.

I think its more odd that many countries use a mix (e.g. the UK with units like stones and some lengths in imperial while others are not)

It's mainly older people that use imperial in my experience. Though we still have things like miles for roads.

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[–] jtrek@startrek.website 14 points 1 month ago

We're a stupid country rules by assholes and morons.

You just know if someone tried to make a serious push for it, all the fox news types would go into a frenzy. It'd be an easy way to whip up their idiot base.

[–] Maturin@hexbear.net 14 points 1 month ago (1 children)

Because my car gets 40 rods to the hogshead and that’s the way I like it!

[–] Admetus@sopuli.xyz 11 points 1 month ago

As a science teacher, when I see a worksheet online mention inches or pounds, that open tab on my browser closes at a rapid speed.

[–] AbouBenAdhem@lemmy.world 8 points 1 month ago* (last edited 1 month ago) (1 children)

My theory is that the federal nature of the US leads to a default popular attitude of hostility toward any policy that originates above the state level, unless there are commercial interests willing to pay for the marketing and campaign contributions to sell it to the people and/or legislators. And businesses aren’t that interested in an improvement that only marginally affects their profits.

[–] artifex@piefed.zip 5 points 1 month ago

One of the very first things the US govt standardized was the size of screws because it was wreaking havoc with shipbuilding efforts.

[–] Horsey@lemmy.world 6 points 1 month ago (1 children)

Americans aren’t taught the metric system in school in a way that would force them to understand why it’s better. American education rarely teaches life skills, and in my case, almost none at all even though I was a full honors student at a top high school.

[–] Godric@lemmy.world 13 points 1 month ago

Americans absolutely are taught the metric system.

Source: was once in elementary school

[–] Malica@lemmy.zip 6 points 1 month ago

Nation of proud morons. Most of them do unofficially anyway

[–] halferect@lemmy.world 5 points 1 month ago

We use both

[–] Uranus_Hz@lemmy.zip 5 points 1 month ago
[–] myyass@lemmy.world 5 points 1 month ago (1 children)

The actual answer is it's too expensive to convert everything at this point. If it takes months to get a pothole filled, good luck with changing all the sighs even as a start. A lot of people use metric anyway. SAE tools can go where the sun don't shine. Fuck your fractions. Give me a 10 or a 12 or a 17 (mm, stay away Jeffrey) makes more sense than 13/32" ... just why, it's so dumb.

[–] octobob@lemmy.ml 7 points 1 month ago (1 children)

SAE tools for SAE hardware. I agree, saying something like "gimme a 7/16 wrench for this 1/4-20 by 3/8 bolt" is probably like speaking a foreign language to someone accustomed to metric. But you get used to it if you see it every day.

Now metric measurements of wire are fucking ridiculous in my eye. AWG (American wire gauge) all day. The metric equivalent measures the diameter of the wire and calls it like 1 mm2 for 18 awg, 1.5 for 16, 2.5 for 14, 4 for 12 awg etc. AWG keeps it nice and easy, every other even number starting at like 32 down to 2.

It does get a little fucky from there tho lol. Like then it goes 1 and 0 AWG, then 1/0, 2/0, 3/0, 4/0 (pronounced like 1 awwt), then 250, 500, 750, 1000 MCM. But I've also heard those sizes of 250-1000 called KCMIL instead for.... reasons....

It's like most of our measurements. It's what "feels" right if that makes any sense. Fahrenheit is more accurate to what changes are noticeable to the human body, a foot or a yard just paints a way better picture than half a meter etc. I'm sure most of it is based off like farmers or something rather than scientific measurements.

[–] myyass@lemmy.world 3 points 1 month ago* (last edited 1 month ago) (4 children)

Yeah you make a proper point; most of the stuff the hardware I work with is metric, the wiring is awg, and the temps are Fahrenheit. Honestly other than a 1/4" wrench and 3/8" spark plug socket, I don't remember the last time I used any of my anything out of my box wrench sets. They basically are wall ornaments that collect dust. Same with range, I would just use meters since they're close enough. You know like, target out 300 meters leading left.

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[–] Ghost_Mermaid@lemmy.zip 5 points 1 month ago (13 children)

I'm old enough to remember when they tried to convert us to metric. I can tell you why.

People tried to force it on us and we don't need the metric system for daily use. Trying to force people to use it isn't going to work. Now, personally, I'd prefer if measurements on rulers and in cars were still given in both systems.

Metric advocates tend to be smug and insulting towards anyone not using the metric system. I have seen this myself more than once. Calling a whole nation stupid because they use a different but functional system of measurement is hardly a good strategy for converting them to your system.

I learned the metric system in school. I understand that the metric system is superior in many sciences. I have strong interests in anthropology. And here I am at 55 and I have never, not once, needed to use metric. Bone measurements are often given in metric but it's not such a big issue that I need to wholly convert to metric.

My question is, what's the big deal? Is the metric system a religion? I've seen evangelical Christians less intent on converting people. Why?

[–] communism@lemmy.ml 15 points 1 month ago (3 children)

The main reason it annoys me is because a lot of English-language recipes online are written by USAmericans and therefore use imperial units that I have to convert. I've also noticed that they seem to measure everything in cups even for things where it makes no sense to use volume (flour is a common one—isn't baking supposed to be precise? Flours can have different densities, air pockets, etc). I find ounces really confusing because they can be volume or mass.

Also, imperial is not standardised, so different countries have different amounts for a cup, an ounce, a pint, etc. I guess I can check the recipe author's country and then convert to metric. But I just find it confusing. Can't we just all use the same units that are nice and easy to use together since they're powers of 10?

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[–] robot_dog_with_gun@hexbear.net 3 points 1 month ago (11 children)

base 10 is way better than whatever the fuck cups, pints, ounces, different ounces, and so on are

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[–] Grilipper54@sh.itjust.works 3 points 1 month ago* (last edited 1 month ago)

For something as standard as math and science; it would be beneficial to have consistency across the whole board.

Im American and learned the metric system and it was helpful with science. I completly bombed the A.C.T but I scored in the top 3% in the science category.

At least some of the drugs in Americas still use the metric system. Thanks MDMA and LSD. Meth too I guess since people buy points aka 100mg

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[–] Bristlecone@lemmy.world 4 points 1 month ago

Bass ackwards

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