this post was submitted on 17 Oct 2026
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[–] gastroglizzy@piefed.social 13 points 2 days ago* (last edited 2 days ago) (10 children)

Metric is great for scientists in a lab with equipment to measure things.

Imperial was created during a time when peasants in the middle of nowhere needed to measure something "close enough" to trade with others, even without tools or measuring equipment, which was only owned by scribes and other members of the nobility.

This is why all imperial length measurements relate to parts of the body and why all volume and weight measurements relate to containers that were commonly used to store the thing you're measuring (a bushel of grain, for example).

Also, a foot can be divided equally into 2, 3, 4, or 6 equally-sized pieces without resorting to estimation or irrational numbers; a meter cannot.

The US agreed to switch to the metric system centuries ago, but the ship carrying the official units sank on the way over.

[–] lauha@lemmy.world 76 points 2 days ago* (last edited 2 days ago) (17 children)

Metric is great for scientists in a lab with equipment to measure things.

Metric is just as great for everyday life as imperial units.

Also, a foot can be divided equally into 2, 3, 4, or 6 equally-sized pieces without resorting to estimation or irrational numbers; a meter cannot.

While I agree in principle, I also enjoy the chaos that imperial system causes when you try adding up 1 1/8 inches + 5 27/32 inches + 7 3/16 inches instead of just using decimal numbers.

Edited for clarity

[–] surewhynotlem@lemmy.world 48 points 2 days ago (1 children)

Metric is just as great for everyday life as imperial units.

This is what the metricians say to feel better about themselves, but they never mean it.

"Oh yes, I'll have a 236.588 milliliters of tea, thank you for offering"

"The kids are out playing in the back 0.914 meters"

"Doctor, I think I broke my left 30.48 centimeters"

Do you see how silly you would sound if you didn't use imperial?

[–] TrickDacy@lemmy.world 28 points 2 days ago

I was co confused until I got the joke lol

[–] wonderingwanderer@sopuli.xyz 2 points 1 day ago (2 children)

That's easy, 14 5/32

(Yes, I did it in my head. Yes, I am chaos)

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[–] aMockTie@piefed.world 7 points 2 days ago* (last edited 2 days ago) (1 children)

1 1/8 inches + 5 27/32 inches + 7 3/16 inches

1/8 = 4/32
3/16 = 6/32
4 + 6 + 27 = 37
37/32 = 1 5/32
1 + 5 + 7 + 1 = 14
Total: 14 5/32

I wouldn't call it chaos, it's a straightforward algorithm:

  1. Identify the largest denominator
  2. Multiply each other fraction by [largest denominator divided by current fraction's denominator] (e.g. 32/8 = 4, so 1/8 * 4/4 = 4/32)
  3. Determine the sum of every numerator
  4. Divide and simplify the number if necessary
  5. Determine the sum of the integers, including any integers added in the previous step

This works for every measurement because the denominator is always a power of 2.

With that said I absolutely prefer metric.

[–] tempest@lemmy.ca 9 points 2 days ago (2 children)

In practice you would just use decimal inches. Doesn't really make it better but you can machine something without ever seeing a fraction if you want to since everything will be in thousandths of an inch.

[–] HeyThisIsntTheYMCA@lemmy.world 4 points 1 day ago (1 children)
[–] livingheart@sh.itjust.works 2 points 1 day ago (1 children)

most electronics breadboards and the pins from (non-tiny) microchips / ICs are spaced at 2.54mm apart, which i eventually realised is a tenth of an inch.

[–] HeyThisIsntTheYMCA@lemmy.world 1 points 21 hours ago

hey none of that mathematics witchery here dude. we guesstimate or we do nothing (and i'm too tired to guess)

[–] aMockTie@piefed.world 5 points 2 days ago

Maybe in your particular industry, but I reckon most people using imperial units aren't using measuring devices with decimal inches or needing the precision of .0001"

[–] taiyang@lemmy.world 7 points 2 days ago (1 children)

Wheeeeeeee fractions!

But after multiplying, 8 + 54 + 3 over 64 is just clean fun, you end up with 14 1/64 inches and wanna die because you accidentally cut the material at 14 inches and now your whole day is ruined.

I'm using some pvc to build a prototype and the percentage of it that turns to microplastic so I can get precise sizing is terrifying. But I'ma use the chop saw we got instead of buying new, larger pvc scissors

[–] JoeBigelow@lemmy.ca 7 points 2 days ago (2 children)

If someone were adding those figures they would switch to decimal. I built furniture for 2 years, 64ths are almost never used over thousands of an inch. If you need to be finer than 32nds you use thou. And that pretty much only for wood. Machine shop I worked in used thou exclusively.

[–] starik@lemmy.today 14 points 2 days ago (1 children)

thousands of an inch

Which is called a “mil”, a name that has never caused confusion

[–] Instigate@aussie.zone 4 points 1 day ago (2 children)

Is it really? That’s really interesting, and would cause a lot of confusion in metric-English countries where ‘mil’ is pejoratively used in speech to either mean ‘millimetre’ or ‘millilitre’ depending on context.

[–] livingheart@sh.itjust.works 1 points 1 day ago

pejoratively ≠ casually

[–] starik@lemmy.today 5 points 1 day ago

It causes confusion in the US too, because, despite popular misconceptions, we do in fact use both systems.

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[–] im_fine_sandy@nord.pub 28 points 2 days ago

Metric allows you to convert between length volume and mass in your head. Someone smarter than me could probably take a reasonable estimate of how long a kettle will take to boil just by knowing it's wattage and estimating its volume.

You're right that "pounds" may have e been a practical measurement back when people didn't have calibrated and everyone's hand weighed a pound. However, that advantage ceased once everyone standardised those measurements.

A metre is equally divisible by 50, 25, 20, 10, 5, and 2. There arr numerous advantages to a base 10 system.

[–] Krudler@lemmy.world 24 points 2 days ago* (last edited 2 days ago) (5 children)

The last bit of rationalizing is hilarious. It's like you don't even understand numbers or math, well what am I saying, you're an American

We can figure out what 70% of a meter is.

Good luck with your peasant system

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[–] TheTechnician27@lemmy.world 21 points 2 days ago* (last edited 2 days ago) (3 children)

"Decimalized currency is great for all those labcoats, but for us regular ol' normal folk, it's much easier to use real, easily divisible livres, which can be divided into 20 sous and subsequently into 12 deniers."

"In fact, imperial is so great because duodecimal invites so much divisibility! What's that? You're saying it goes 12 –> 3 –> 1760 for length, 16 –> 2000 for units of mass, that units of volume are a bastardized base-2 system where there isn't even a consistent multiple between units, and that pounds and short tons aren't cleanly divisible by 3? And that not a single unit of volume is divisible by 3 unless you bring it down to the level of teaspoons?"

"'Why not just switch to a fully duodecimal system if divisibility is so important to you', you ask? Well fuck you, a foot is about as long specifically as my forearm, and there's no way my poor, emaciated monkey brain would ever have found something similar to latch onto with SI units. Those people living in most of the rest of the world probably just carry meter sticks around up their asses. 'How many square inches is a 30 x 30-foot room?', you ask? Well fuck you again."

[–] Darkmuch@lemmy.world 3 points 1 day ago (2 children)

I hate imperial. But I do think it would be neat if we had also changed our common numeral system to base 12 when making metric. Dividing by 3 and 4 is WAY more common than dividing by 5.

But no way that would happen unless we had a massive linguistic shift occur as well. Base 10 is too rooted in our culture.

[–] gazter@aussie.zone 3 points 1 day ago

But then my crusade for metric time would seem silly

[–] PattyMcB@lemmy.world 7 points 2 days ago (1 children)

Jesse, what the fuck are you talking about?

[–] TheTechnician27@lemmy.world 10 points 2 days ago* (last edited 2 days ago) (1 children)

~~I thought I was clowning on a tired Gish gallop of flimsy, ad hoc justifications for imperial/US customary.~~

~~Any concerns over anything I said in particular?~~

Edit: He can't keep getting away with it!

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[–] AbsolutelyNotAVelociraptor@piefed.social 16 points 2 days ago (1 children)

Every country used a system based off body parts or similarly easy-to-measure parts. When the metric system was invented, most of them switched because it was the logic thing to do. Some just decided that the dumb system was better who knows why.

Spain adopted the metric system in 1852 and by the time, they weren't the most advanced country.

[–] adarza@lemmy.ca 15 points 2 days ago (1 children)

Spain adopted the metric system in 1852 and by the time, they weren't the most advanced country

perhaps when the u.s. finally reaches the level of 1852 spain, americans will switch too.

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[–] Morotsgubbe@sopuli.xyz 19 points 2 days ago (1 children)

What do you mean you can not divide a meter without estimations or irrational numbers? Do you mean fractions or decimal? 1m/3=3.33… dm ( repeating, which means it is a rational fraction)

[–] livingheart@sh.itjust.works 17 points 2 days ago (4 children)

Anyone who thinks you can divide one number by another and get an irrational number... doesn't know what irrational means.

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[–] SpaceNoodle@lemmy.world 12 points 2 days ago (1 children)

Also, US Customary units share many of the same terms as Imperial, but the actual quantities differ.

[–] IrateAnteater@sh.itjust.works 16 points 2 days ago (1 children)

Even more fun is that US customary units are explicitly defined by their metric equivalents. So the US is using metric whether they like it or not, they just slap pointless conversion factors on top.

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[–] queermunist@lemmy.ml 2 points 1 day ago

That's why duodecimal is superior to decimal.

Instead of converting to metric, we should convert our entire numerical system to be base 12.

[–] Schemen110676@lemmy.ml 1 points 1 day ago

What? Of course you ca split a METER into smaller pieces.

500, 330, 250 and 115mm

Easy as a pie.

And no one is its right mind is actually using thirds. There is no way you can actually use thirds in anything but as an approximation

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