Conversion Factors
Multiply	By	To Obtain		Multiply	By	To Obtain
Length				BTU	1x10-5	therm
anstrom	1x10-10	m		cal(gm-cal)	3.968x10-3	BTU
cm	0.03281	ft		cal(gm-cal)	4.184	J
cm	0.3937	in		eV	1.602x10-19	J
ft	0.3048	m		ft-lbf	1.285x10-3	BTU
in	2.54	cm		ft-lbf	1.35582	J
m	3.28083	ft		ft-lbf	1.3558	N-m
mi	5280	ft		hp-hr	2544	BTU
mi	1.6093	km		J	9.478x10-4	BTU
micron	1x10-6	m		J	6.2415x1018	eV
km	3280.8	ft		J	0.73756	ft-lbf
km	0.6214	mi		J	1	N-m
Area				kJ	0.9478	BTU
acre	43560	ft2		kJ	737.56	ft-lbf
ft2	2.2957x10-5	acre		kW-hr	3413	BTU
Volume				kW-hr	3.6x106	J
ft3	7.481	gal		N.m	0.7376	ft-lbf
gal	0.13368	ft3		N.m	1	J
gal	3.7854	l		ft-lbf	3.766x10-7	kW-hr
gal	3.7854x10-3	m3		ther	1x105	BTU
l	0.03531	ft3		Power
l	61.02	in3		BTU/hr	0.216	ft-lbf/sec
l	0.2642	gal		BTU/hr	3.930x10-4	hp
l	0.001	m3		BTU/hr	0.2931	W
Force				J/s	1	W
kg	2.20462	lbm		kW	3413	BTU/hr
kip	1000	lbf		kW	0.9481	BTU/sec
kip	4448	N		kW	737.6	ft-lbf/sec
lbm	0.4536	kg		kW	1.341	hp
N	0.22481	lbf		hp	2544	BTU/hr
lbf	4.4482	N		hp	33000	ft-lbf/min
Pressure				hp	550	ft-lbf/sec
atm	1.01325	baar		hp	0.7457	kW
atm	76	cm Hg		W	3.413	BTU/hr
atm	33.9	ft water		W	0.7376	ft-lbf/sec
atm	29.92	in Hg		W	1.341x10-3	hp
atm	14.696	lbf/in2		W	1	J/sec
atm	101.3	kPa		Rate
atm	1.013x105	Pa		m/sec	196.8	ft/min
bar	0.9869	atm		l/sec	15.85	gal/min
bar	1x105	Pa		l/sec	2.119	ft3/min
kPa	9.8693x10-3	atm		gal/min	0.002228	ft3/sec
kPa	0.14504	lbf/in2		lbm/ft3	0.016018	g/cm3
lbf/in2	0.06805	atm		lbm/ft3	16.018	kg/m3
lbf/in2	2.307	ft water		g/cm3	1000	kg/m3
lbf/in2	2.036	in Hg		g/cm3	62.428	lbm/ft3
lbf/in2	6894.8	Pa		Others
Pa	1.4504x10-4	lbf/in2		kJ/kg	0.42992	BTU/lbm
Work/Energy				kJ/kg.k	0.23885	BTU/lbm oR
BTU	778.17	ft-lbf		km/hr	0.6214	mi/hr
BTU	1055	J		BTU/lbm	2.326	kJ/kg
BTU	2.928x10-4	k W-hr		BTU/lbm-oR	4.1868	kJ/kg.K