Derived System of Units

The Derived System of Units (DSU) is a standard system of units derived from the Basilican System of Units.

Units

DSU base units

Quantity	Symbol	Unit name	SI	BSU	HCM
length	dul	derived unit of length	= 1.6162 m	= 1 × 10−65 SDU	≈ 3.7989 nanopar
mass	dum	derived unit of mass	= 2.176 kg	= 1 × 100 SMU	≈ 1.2899 × 1013 el
time	dut	derived unit of time	= 0.53910629 s	= 1 × 10−2 STU	≈ 0.0063315 GI
temperature	dutr	derived unit of temperature	= 1.417 K	= 1 × 10−1 STE	≈ 1.8157 kin
electric current	duc	derived unit of current	= 6.28318530717959 x 100 Ampere	=	=

Prefixes

Prefixes for the Derived System of Units

Multiples	Name		deca-	hecto-	kilo-	mega-	giga-	tera-	peta-	exa-	zetta-	yotta-
	Symbol		da	h	k	M	G	T	P	E	Z	Y
	Factor	100	101	102	103	106	109	1012	1015	1018	1021	1024
Fractions	Name		deci-	centi-	milli-	micro-	nano-	pico-	femto-	atto-	zepto-	yocto-
	Symbol		d	c	m	μ	n	p	f	a	z	y
	Factor	100	10−1	10−2	10−3	10−6	10−9	10−12	10−15	10−18	10−21	10−24

Common units

In common parlance, some powers of 10 of DSU base units have specific names. Of these, ds, dmin, dh, and dls are most commonly used. dy and dly are also used, but may be substituted by other units of similar magnitude. The derived week and derived month are not as commonly used and have no corresponding symbol.

Common units

Name	Symbol	Quantity	Expression in terms of DSU base units	SI derived unit
kilodul	kdul	length	= 1 × 103 dul
centidul	cdul	length	= 1 × 10−2 dul
millidul	mdul	length	= 1 × 10−3 dul
microdul	μdul	length	= 1 × 10−6 dul
nanodul	ndul	length	= 1 × 10−9 dul
square kilodul	kdul2	area	= (1 × 103 dul)2
square hectodul	hdul2	area	= (1 × 102 dul)2
derived unit of area	dua	area	= (1 × 100 dul)2
derived unit of volume	duv	volume	= (1 × 100 dul)3
derived unit of pressure	dup	pressure	= 1 dum x (1 dua)-1
derived unit of force	duf	force	= dum x dua x dut-2	≈19.55691273714402 Joules
derived unit of field strength	dufs	magnetic field strength	= dum x duc-1 x dut-2	≈0.000011915992597 Gauss
derived unit of work	duw	work	= duf x dut-1	≈36.27654341993305 Watts
derived unit of density	dud	density	= 1 dum × (1 dul)−3
millidum	mdum	mass	= 1 × 10−3 dum
microdum	μdum	mass	= 1 × 10−6 dum
derived second	ds	time	= 1 × 100 dut	≈ .53910629 s
derived minute	dmin	time	= 1 × 102 dut	≈ 0.8985105 min
derived hour	dh	time	= 1 × 104 dut	≈ 1.4975175 h
derived day	dd	time	= 1 × 105 dut	≈ 0.6239656 d
derived week		time	= 1 × 106 dut	≈ 0.8913794 week
derived month		time	= 1 × 107 dut
derived year	da, dy	time	= 1 × 108 dut	≈ 1.7083598 a (Gregorian) ≈ 623.9656134259 d
derived light-second	dls	length	= c⋅dut	≈ 0.53910629 ls
derived light-year	dly	length	= c⋅dut × 108	≈ 1.7083247 ly (Julian)

Calendar

The calendar system used in DSU is called Derived Time (DT). The format for DT is YYYYY-MM-DDD h:mm:ss. The beginning of year 0 is calibrated to the beginning of year 0 in GST.