System of Units

[Dagnia]

We use our own system. It is very much like metric in that the units are all pretty regular, but the sizes are different and as we use a hexadecimal base (base 16) rather than decimal, everything is either made up of 16 or a multiple thereof, or divided into 16.

[Luziyca]

We used to use imperial and it is still used for some things, but we now mostly use metric.

[Krampusreich]

Krampusreich uses metric.

[Hamilpore]

Hamilpore relies on trade using the international system of measurements. The standard is metric with very few exceptions. Of course, due to the influence of the United States, the imperial system is still taught in simplicity.

[Constitutional Technocracy of Minecraft]

We use the metric system

[Corunia and Mironor]

Corunia and Mironor uses metric for everything

[Kitatani]

Kitatani maintains the use of the Metric system over the outdated system of Imperial.

[Wedonland]

Wedonland officially uses the traditional imperial measurements for business.

[Yannia]

Yannia uses a system of its own, which could be described as dozenal (or duodecimal) metric.
Examples:

Time:	metric	US customary	conversion	remarks
stondë	10800 s	3 hours	1/8 day
wárodë	900 s	15 minutes	1/12 stondë	literally: twelfth
conodë	75 s	1 min 15 sec	1/12 wárodë	literally: twelfth squared
burodë	6.25 s	6¼ seconds	1/12 conodë	literally: twelfth cubed

Length:	metric	US customary	conversion
leyn	2.255 mm	0.089 in	1/12 þüm
þüm	27.06048 mm	1.065 in	12 leynën
vut	324.726 mm	1.065 ft	12 þüm
rudë	3.897 m	12.784 ft, 4.261 yd	12 vut
kétën	46.761 m	51.138 yd	12 rudë
cábël	280.563 m	306.827 yd	6 kétëns
meyl	3.367 km	2.092 mile	12 cábëls

Area:	metric	US customary	conversion
vírcantë leyn	5.085 mm2		1/144 vírcantë þüm
vírcante þüm	732.270 mm2	1.135 square inch	144 vírcante leyn
vírcante vut	0.105 m2	1.135 square foot	144 vírcante þüm
vírcante rudë	15.184 m2	163.443 square foot	144 vírcante vut
hont	2186.545 m2	2615.086 square yard	144 vírcante rudë
morgën	8746.181 m2	2.161 acre	4 hont

Volume:	metric	US customary	conversion	equivalent
leynëliñ	11.467 µl		1/144 urmá	cubic leyn
urma	1.651 ml		144 leynëliñ
þümëliñ	19.816 ml	1.209 cubic inch	12 urmá	cubic þüm
pint	0.238 l	8.041 fluid ounce	12 þümëliñ
sképël	2.853 l	3.015 quart	12 pint
ankër	34.241 l	9.046 gallon	12 sképël	cubic vut
myd	410.896 l	108.547 gallon	12 ankër
last	4930.747 l	1302.57 gallon	12 myd
rudëliñ	59168.964 l	15630.8 gallon	12 last	cubic rudë

Weight:	metric	US customary	conversion	equivalent
corël:	138.941 mg	2.144 grain	1/12 urmá
urmá:	1.651 g	0.058 oz	12 corël
lód:	19.816 g	0.699 oz	12 urmá	1 cubic þüm of water
marc:	237.787 g	8.388 oz	12 lód
stén:	2.853 kg	6.291 lb	12 marc
ankër:	34.241 kg	75.489 lb	12 stén	1 cubic vut of water
myd:	410.896 kg	905.87 lb	12 ankër
last:	4930.747 kg	5.435 ton	12 myd

Temperature:	Fahrenheit	Celcius	remarks
-393.34	-459.67	-273.15	absolute zero
-128.00	-128.00	-88.89	Deycman* equals Fahrenheit
-57.60	-40.00	-40.00	Celsius equals Fahrenheit
-25.60	0.00	-17.78	Fahrenheit's ice/salt mixture
0.00	32.00	0.00	melting water at standard pressure
21.60	59.00	15.00	average surface temperature on Earth
28.80	68.00	20.00	room temperature
36.00	77.00	25.00	average Summer temperature in Yannia
53.28	98.60	37.00	average human body temperature
54.40	100.00	37.78	100 degrees Fahrenheit
144.00	212.00	100.00	boiling water at standard pressure

* Yannia uses the Deycman scale for temperatures.

[Golden State Warriorz]

Combination of metric and imperial (metric is official but imperial is very common in everyday use). Which one is used often depends on what is being measured.
- Height: usually in feet and inches
- Volume: Usuaully ml and liters
- Weight: Typically kg, sometimes lbs

[My Square Hectare of Oppression]

Given that there are more than 50 different ways to define the length of a foot, and given that my feet are too large for everyday use as a measure (and you know what they say about that ) , i have decided to implement the metric system.

[New Falster]

New Falster uses the metric system.

[Vyzhva]

Vyzhva uses the metric system, but the Vyzhvan populace has been told that this system was indigenously invented by a pair of Vyzhvan physicists a year following the Zayetist victory in the Civil War.

[None]

We use the International System of Units to allow for easy conversations and calculations. However, we do not divide years into months, and one week is equal to 10 days, except for the last week of each year, which contains the last five days. Every four years, to account for the extra 0.25 days at the end of each year, a day 0 is added after day 365, but before the next year's day 1. We also use the Holocene Calendar to record years.
The dates are written like this:
January 14th = D-014 | 14/01/2018 = 12018-014
April 5th = D-095 | 05/04/2018 = 12018-095
December 31st = D-365 | 31/12/2018 = 12018-365
D-000 is written as 12016—12019-000, because it is a combination of the extra 0.25 days from the upcoming four years.

[Lancov]

Lancov uses the metric system.

[Aldivy]

Metric system is used for all measurements.

[Jonsons Rock]

We still cling to the imperial units on Jonsons Rock, using only three metric units in daily life: Seconds, Volts and Ampere.

[Toin]

Since the creation of the kingdom in late 2016, Toin has always used and endorsed the metric system, with the curious exception of the temperature measurement. Temperatures are measured in Fahrenheit instead of Celsius. Various cities and towns use the imperial system de facto, however we, as a government, refuse to recognize this legally. A few make up their own measurements, but we also refuse to recognize this as well.

[Kalaascovy]

My nation hasn't gotten the issue yet, but we go metric when the event fires

[Hylia Magna]

As a result of modernisation, we have adopted the metric system / SI for all measurements in order to keep pace and touch with the wider world.

[Sugrastan]

Sugrastan officially and heavily uses the metric system, but with occasional imperial units for things such as the size of a computer display, guitar neck lenghts and some uses in carpentry. The most common imperial unit used is Sugrastan is the inch.

[Daltic Peoples]

Metric units of measurement.

[The Free Islands of Independence]

Metric system is officially used, but seeing imperial isn't uncommon.

[New Wroclaw]

100% Metric.

[Magical Equestria]

Equestria doesn't really have a unified system of weights and measures. For official government purposes, the Canterlot system is used. It's a hodge-podge of various obscure weights and measures, including things like "hogsheads", "ponyweights", "rods", and so on. It's about as un-metric as you can get, and is really only fully understood by unicorn civil servants. Compounding this is the traditional systems that have grown up in other parts of Equestria. Some of these are pretty far removed from the Canterlot system (Pegasi, for example, have an entirely unique system of measurements used only for clouds) and need a book-sized set of conversion diagrams.

It's things like this that remind us that ponies value tradition over practicality.