this post was submitted on 03 Nov 2026
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It's easier to use their names
Deci = 1/10th
Centi = 100th
Milli = 1000th
Micro = 1,000,000th
Nano = 1,000,000,000th
Deca = ×10
Hector = ×100
Kilo = ×1,000
Mega - ×1,000,000
Giga = × 1,000,000,000
Tera = × 1,000,000,000,000,000
Etc prefixing the thing being measured.
So you know what a centimetre, gigabyte, megaton, kiljoule, etc. are.
Other easy conversions too, like 1kg = 1L of water.
And it's metre. Because a meter is a measuring device and all this shit is Latin (metrum) like proper science stuff be. Americans don't even use it, so they can fuck off with their misspelling.
And that's it. You now know the metric system. You probably now realise you've been using it all along for many things.
I prefer just to use base units like kg,m,s and just use scientific notation. Converting between units that change scaling like the centimeter with a 10² increment is annoying when most of the prefixes use 10³ increments. And nobody even uses deci- and deca- which are 10¹ increments.
You also have weird metric, but not SI units like the Ångström which is 10⁻¹⁰. You also have plenty of natural units like the speed of light per second or things like the astronomical unit that don't fit. And pressure is the worst one. It is either kgm⁻¹s⁻², N/m², or a Pascal, but it could also measure atmospheres, millimeters of mercury, or the CGS barye and none of those have convenient conversion factors. And don't even get me started on temperature cause conversion with that get funky!
The thing with measurement is that it's best to have one standard unit and measure stuff based on that. The fact that US Customary units even convert between each other was an ongoing effort in standardization as they were each made for a specific purpose and then people had to consolidate them in convenient ways in a world without computers.
All that said, I love the metric system, but I'm still disappointed that it wasn't based on dozenal or hexadecimal so I could get some better division that 2, 5, or 10. lmao
Plenty of cooking recepies use deciliters.
And I'm not convinced about dozenal or hexadecimal for a unit system as long as base-ten is what we count in. The units should always be in the same base for the sake of simplicity.
I count in dozens. Three knuckles per finger, then one knuckle on the thumb per round. I count to 96 on my hands
And is that 96 in base-twelve or base-ten?
Exactly. The OP doesn't do justice to metric system. The centi- and deci-anything are really to be avoided, the important ones are 3 orders of magnitude apart. So you learn ~5 prefixes and gain ability to interpret a vast range of values from microscopic to cosmic, across all measurable quantities. We should appreciate it for genius it is.