Units whose names include SI units and non-SI units accepted for use with SI

The names and symbols of several units in everyday use include both SI units and non-SI units accepted for use with SI.

Some of these units, and their definitions, are listed below.

Examples of units whose names include SI units and non-SI units accepted for use with SI

Name	Symbol	Quantity	SI units
kilometre per hour	km/h	speed	¹⁰⁰⁰⁄₃₆₀₀ m s^-1
$1 \mspace{4mu} \text{km/h} \mspace{6mu} = \dfrac{10^3}{(3 \mspace{4mu} 600)(299 \mspace{4mu} 792 \mspace{4mu} 458)} \mspace{6mu} c\\ \\ \\ 1 \mspace{4mu} \text{km/h} \mspace{6mu} \approx 9.265 \mspace{4mu} 669 \mspace{4mu} 311 \mspace{4mu} 059 \mspace{4mu} 779 \mspace{4mu} 155 \times10^{-10} \mspace{6mu} c$
litre per 100 kilometres	L/100 km	fuel efficiency	m³/10⁸ m
$1 \mspace{4mu} \text{L/100 km} \mspace{6mu} = \dfrac{(9 \mspace{4mu} 192 \mspace{4mu} 631 \mspace{4mu} 770)^2}{(10^8)(299 \mspace{4mu} 792 \mspace{4mu} 458)^2} \mspace{6mu} \dfrac{c^2}{{\Delta \nu _{Cs}}^2}\\ \\ \\ 1 \mspace{4mu} \text{L/100 km} \mspace{6mu} \approx 9.402 \mspace{4mu} 391 \mspace{4mu} 313 \mspace{4mu} 904 \mspace{4mu} 046 \mspace{4mu} 861 \times10^{-6} \mspace{6mu} c^2 \mspace{4mu} {\Delta \nu _{Cs}}^{-2}$
kilowatt hour	kW h	energy	3.6 × 10⁶ J
$1 \mspace{4mu} \text{kW h} \mspace{6mu} = \dfrac{3.6 \times10^6}{(6.626 \mspace{4mu} 070 \mspace{4mu} 15 \times 10^{-34})(9 \mspace{4mu} 192 \mspace{4mu} 631 \mspace{4mu} 770)} \mspace{6mu} h \mspace{4mu} \Delta \nu _{Cs}\\ \\ \\ 1 \mspace{4mu} \text{kW h} \mspace{6mu} \approx 5.910 \mspace{4mu} 260 \mspace{4mu} 285 \mspace{4mu} 245 \mspace{4mu} 545 \mspace{4mu} 770 \mspace{4mu} 501 \times10^{29} \mspace{6mu} h \mspace{4mu} \Delta \nu _{Cs}$
ampere hour	A h	electric charge	3600 C
$1 \mspace{4mu} \text{A h} \mspace{6mu} = \dfrac{3 \mspace{4mu} 600}{1.602 \mspace{4mu} 176 \mspace{4mu} 634 \times 10^{-19}} \mspace{6mu} e\\ \\ \\ 1 \mspace{4mu} \text{A h} \mspace{6mu} \approx 2.246 \mspace{4mu} 943 \mspace{4mu} 266 \mspace{4mu} 805 \mspace{4mu} 874 \mspace{4mu} 538 \times10^{22} \mspace{6mu} e$
milliampere hour	mA h	electric charge	3.6 C
$1 \mspace{4mu} \text{mA h} \mspace{6mu} = \dfrac{3.6}{1.602 \mspace{4mu} 176 \mspace{4mu} 634 \times 10^{-19}} \mspace{6mu} e\\ \\ \\ 1 \mspace{4mu} \text{mA h} \mspace{6mu} \approx 2.246 \mspace{4mu} 943 \mspace{4mu} 266 \mspace{4mu} 805 \mspace{4mu} 874 \mspace{4mu} 538 \times10^{19} \mspace{6mu} e$