UnitSystem.md

Description how to build units witht the D-SI format is here.

SI base units of measurement (platinum units)

D-SI Identifyer	D-SI Medal	SI name	SI symbol	SI Reference
\metre	platinum	metre	m	[1, Table 2]
\kilogram(a	platinum	kilogram	kg	[1, Table 2]
\second	platinum	second	s	[1, Table 2]
\ampere	platinum	ampere	A	[1, Table 2]
\kelvin	platinum	kelvin	K	[1, Table 2]
\mole	platinum	mole	mol	[1, Table 2]
\candela	platinum	candela	cd	[1, Table 2]

_{(a: It is not allowed to use unit kilogram with a prefix.}

D-SI additional platinum units of measurement

D-SI Identifyer	D-SI Medal	SI name	SI symbol	SI Reference
\one(b	platinum	one	1	[1, Sec. 2.2.1]
\day	platinum	day	d	[1, Table 8]
\hour	platinum	hour	h	[1, Table 8]
\minute	platinum	minute	min	[1, Table 8]
\degree	platinum	degree	°	[1, Table 8]
\arcminute	platinum	arcminute	‘	[1, Table 8]
\arcsecond	platinum	arcsecond	“	[1, Table 8]

_{(b: Unit one must not be used with a prefix of an exponent.}

SI derived units of measurement

D-SI Identifyer	D-SI Medal	SI name	SI symbol	SI base unit expression	D-SI base unit expression	SI Reference
\gram(c	gold	gram(a	g	10-3 kg	\kilogram	[1, Sec. 3]
\radian	gold	radian	rad	m/m	\metre\metre\tothe{-1}	[1, Table 4]
\steradian	gold	steradian	sr	m2/m2	\metre\tothe{2}\metre\tothe{-2}	[1, Table 4]
\hertz	gold	hertz	Hz	s-1	\second\tothe{-1}	[1, Table 4]
\newton	gold	newton	N	m kg s-2	\metre\kilogram\second\tothe{-2}	[1, Table 4]
\pascal	gold	pascal	Pa	m-1 kg s-2	\metre\tothe{-1}\kilogram\second\tothe{-2}	[1, Table 4]
\joule	gold	joule	J	m2 kg s-2	\metre\tothe{2}\kilogram\second\tothe{-2}	[1, Table 4]
\watt	gold	watt	W	m2 kg s-3	\metre\tothe{2}\kilogram\second\tothe{-3}	[1, Table 4]
\coulomb	gold	coulomb	C	s A	\second\ampere	[1, Table 4]
\volt	gold	volt	V	m2 kg s-3 A-1	\metre\tothe{2}\kilogram\second\tothe{-3}\ampere\tothe{-1}	[1, Table 4]
\farad	gold	farad	F	m-2 kg-1 s4 A2	\metre\tothe{-2}\kilogram\tothe{-1}\second\tothe{4}\ampere\tothe{2}	[1, Table 4]
\ohm	gold	ohm	Ω	m2 kg s-3 A-2	\metre\tothe{2}\kilogram\second\tothe{-3}\ampere\tothe{-2}	[1, Table 4]
\siemens	gold	siemens	S	m-2 kg-1 s3 A2	\metre\tothe{-2}\kilogram\tothe{-1}\second\tothe{3}\ampere\tothe{2}	[1, Table 4]
\weber	gold	weber	Wb	m2 kg s-2 A-1	\metre\tothe{2}\kilogram\second\tothe{-2}\ampere\tothe{-1}	[1, Table 4]
\tesla	gold	tesla	T	kg s-2 A-1	\kilogram\second\tothe{-2}\ampere\tothe{-1}	[1, Table 4]
\henry	gold	henry	H	m2 kg s-2 A-2	\metre\tothe{2}\kilogram\second\tothe{-2}\ampere\tothe{-2}	[1, Table 4]
\degreecelsius	gold	degree Celsius	°C	K	\kelvin	[1, Table 4]
\lumen	gold	lumen	lm	m2 m-2 cd	\metre\tothe{2}\metre\tothe{-2}\candela	[1, Table 4]
\lux	gold	lux	lx	m-2 cd	\metre\tothe{-2}\candela	[1, Table 4]
\becquerel	gold	becquerel	Bq	s-1	\second\tothe{-1}	[1, Table 4]
\sievert	gold	sievert	Sv	m2 s-2	\metre\tothe{2}\second\tothe{-2}	[1, Table 4]
\gray	gold	gray	Gy	m2 s-2	\metre\tothe{2}\second\tothe{-2}	[1, Table 4]
\katal	gold	katal	kat	s-1 mol	\second\tothe{-1}\mole	[1, Table 4]
\bit(d	gold	bit	bit	1	\one	[1, p. 143]
\byte(e	gold	byte	B	1	\one	[1, p. 143]
\ppm(f	gold	parts per million	ppm	1	\one	[1, Sec. 5.4.7]
\percent(g	gold	percent	%	1	\one	[1, Sec. 5.4.7]

_{(c: The unit gram must not be combined with the prefix kilo.}

_{(d: Binary prefixes are the only allowed prefixes for unit bit.}

_{(e: Binary prefixes are the only allowed prefixes for unit byte.}

_{(f: Unit ppm (parts per million) must not be used with a prefix of an exponent.}

_{(g: Unit percent must not be used with a prefix of an exponent.}

Non-SI units of measurement allowed with the SI

D-SI Identifyer	D-SI Medal	SI name	SI symbol	SI base unit expression	D-SI base unit expression	SI Reference
\minute	silver	minute	min	s	\second	[1, Table 8]
\hour	silver	hour	h	s	\second	[1, Table 8]
\day	silver	day	d	s	\second	[1, Table 8]
\degree	silver	degree	°	rad	\radian	[1, Table 8]
\arcminute	silver	second (arc second)	"	rad	\radian	[1, Table 8]
\arcsecond	silver	second (arc second)	'	rad	\radian	[1, Table 8]
\hectare	silver	hectare	ha	m2	\metre\tothe{2}	[1, Table 8]
\litre	silver	litre	l	m3	\metre\tothe{3}	[1, Table 8]
\tonne	silver	tonne	t	kg	\kilogram	[1, Table 8]
\electronvolt	silver	electronvolt	eV	m2 kg s-2	\metre\tothe{2}\kilogram\second\tothe{-2}	[1, Table 8]
\dalton	silver	dalton	Da	kg	\kilogram	[1, Table 8]
\astronomicalunit	silver	astronomical unit	au	m	\metre	[1, Table 8]
\neper	silver	neper	Np	1	\one	[1, Table 8]
\bel(h	silver	bel	B	1	\one	[1, Table 8]
\decibel(i	silver	decibel(b	dB	1	\one	[1, Table 8]

_{(h: The unit bel must not be combined with the prefix deci.}

_{(i: The unit decibel must not be combined with any prefix.}

SI prefixes decimal

D-SI Identifyer(j	D-SI Medal	SI name	SI symbol	Multiplyer	SI Reference
\deca	gold	deca(a	da	10	[1, Table 7]
\hecto	gold	hecto(a	h	100	[1, Table 7]
\kilo(k	gold	kilo(a,b	k	1000	[1, Table 7]
\mega	gold	mega(a	M	1000000	[1, Table 7]
\giga	gold	giga(a	G	1000000000	[1, Table 7]
\tera	gold	tera(a	T	1000000000000	[1, Table 7]
\peta	gold	peta(a	P	1000000000000000	[1, Table 7]
\exa	gold	exa(a	E	1000000000000000000	[1, Table 7]
\zetta	gold	zetta(a	Z	1000000000000000000000	[1, Table 7]
\yotta	gold	yotta(a	Y	1000000000000000000000000	[1, Table 7]
\ronna	gold	ronna	R	1000000000000000000000000000	[2, Resolution 3]
\quetta	gold	quetta	Q	1000000000000000000000000000000	[2, Resolution 3]
\deci(l	gold	deci(a ,b	d	0.1	[1, Table 7]
\centi	gold	centi(a	c	0.01	[1, Table 7]
\milli	gold	milli(a	m	0.001	[1, Table 7]
\micro	gold	micro(a	μ	0.000001	[1, Table 7]
\nano	gold	nano(a	n	0.000000001	[1, Table 7]
\pico	gold	pico(a	p	0.000000000001	[1, Table 7]
\femto	gold	femto(a	f	0.000000000000001	[1, Table 7]
\atto	gold	atto(a	a	0.000000000000000001	[1, Table 7]
\zepto	gold	zepto(a	z	0.000000000000000000001	[1, Table 7]
\yocto	gold	yocto(a	y	0.000000000000000000000001	[1, Table 7]
\ronto	gold	ronto	r	0.000000000000000000000000001	[2, Resolution 3]
\quecto	gold	quecto	q	0.000000000000000000000000000001	[2, Resolution 3]

_{(j: All prefixes must not be combined with the units kilogram, decibal, one, bit, and byte.}

_{(k: The prefix kilo must not be combined with the unit gram.}

_{(l: The prefix deci must not be combined with the unit bel.}

SI prefixes binary

D-SI Identifyer(m	D-SI Medal	SI name	SI symbol	Multiplyer	SI Reference
\kibi	gold	kibi	Ki	1024	[1, p. 143]
\mebi	gold	mebi	Mi	1048576	[1, p. 143]
\gibi	gold	gibi	Gi	1073741824	[1, p. 143]
\tebi	gold	tebi	Ti	1099511627776	[1, p. 143]
\pebi	gold	pebi	Pi	1125899906842624	[1, p. 143]
\exbi	gold	exbi	Ei	1152921504606846976	[1, p. 143]
\zebi	gold	zebi	Zi	1180591620717411303424	[1, p. 143]
\yobi	gold	yobi	Yi	1208925819614629174706176	[1, p. 143]

_{(m: The binary prefixes are only allowed to be used with units bit and byte.}

Additional units from 8th edition of the SI-brochure

D-SI Identifyer	D-SI Medal	SI name	SI symbol	SI base unit expression	D-SI base unit expression	SI Reference
\clight	bronze	n.u. of speed	c0	m s-1	\metre\second\tothe{-1}	[3, Table 7]
\planckbar	bronze	n.u. of action and a.u. of action	ħ	J s	\joule\second	[3, Table 7]
\electronmass	bronze	n.u. of mass and a.u. of mass	me	kg	\kilogram	[3, Table 7]
\naturalunittime	bronze	n.u. of time	ħ (me-1 c0-2)	s	\second	[3, Table 7]
\elementarycharge	bronze	a.u. of charge	e	C	\coulomb	[3, Table 7]
\atomicunittime	bronze	a.u. of time	ħ Eh-1	s	\second	[3, Table 7]
\bohr	bronze	a.u. of length	a0	m	\metre	[3, Table 7]
\hartree	bronze	a.u. of energy	Eh	J	\joule	[3, Table 7]
\bar	bronze	bar	bar	Pa	\pascal	[3, Table 8]
\mmHg	bronze	millimetre of mercury	mmHg	Pa	\pascal	[3, Table 8]
\angstrom	bronze	ångström	Å	m	\metre	[3, Table 8]
\nauticalmile	bronze	nautucalmile	M	m	\metre	[3, Table 8]
\barn	bronze	barn	b	m2	\metre\tothe{2}	[3, Table 8]
\knot	bronze	knot	kn	m s-1	\metre\second\tothe{-1}	[3, Table 8]
\erg	bronze	erg	erg	J	\joule	[3, Table 9]
\dyne	bronze	dyne	dyn	N	\newton	[3, Table 9]
\poise	bronze	poise	P	Pa s	\pascal\second	[3, Table 9]
\stokes	bronze	stokes				[3, Table 9]
\stilb	bronze	stilb	sb	m-2	\metre\tothe{-2}	[3, Table 9]
\phot	bronze	phot	ph	lx	\lux	[3, Table 9]
\gal	bronze	gal	Gal	m s-2	\metre\second\tothe{-2}	[3, Table 9]
\maxwell	bronze	maxwell	Mx	Wb	\weber	[3, Table 9]
\gauss	bronze	gauss	G	T	\tesla	[3, Table 9]
\aersted	bronze	œrsted	Oe	A m-1	\ampere\metre\tothe{-1}	[3, Table 9]

\elementarycharge

Operators for combining units

D-SI Identifyer	Description	Examples	D-SI Medal
	Multiplication: simply append one unit to another	\metre\metre	PLATINUM
\tothe{n}	Exponent: following a unit where n is an integer or (+-)0.5	\metre\tothe{2}, \second\tothe{-0.5}	PLATINUM
\per	Division: All units on the left side of the operator devided by all units on its right side	\metre\per\metre	SILVER

References

[1] BIPM: 9th edition SI brochure (englisch): https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf

[2] BIPM: List of Resolutions for the 27th meeting of the General Conference on Weights and Measures 2022: https://www.bipm.org/documents/20126/77765681/Resolutions-2022.pdf/281f3160-fc56-3e63-dbf7-77b76500990f#page=22

[3] BIPM: 8th edition SI brochure (englisch): https://www.bipm.org/documents/20126/41483022/si_brochure_8.pdf

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