CONVERSION FACTORS
Multiply
acre
ampere-hr (A-hr)
ångström (Å)
atmosphere (atm)
atm, std
atm, std
atm, std
atm, std
By
43,560
3,600
1×10–10
76.0
29.92
14.70
33.90
1.013×105
bar
barrels–oil
Btu
Btu
Btu
Btu/hr
Btu/hr
Btu/hr
1×105
42
1,055
calorie (g-cal)
cal
cal
cal/sec
centimeter (cm)
cm
centipoise (cP)
centistokes (cSt)
cubic feet/second (cfs)
3.968×10–3
1.560×10–6
4.186
4.186
cubic foot (ft3)
cubic meters (m3)
electronvolt (eV)
foot (ft)
ft
ft-pound (ft-lbf)
ft-lbf
ft-lbf
ft-lbf
ft-lbf/sec
2.928×10–4
778
3.930×10–4
0.293
0.216
3.281×10–2
0.394
0.001
1×10–6
0.646317
7.481
1,000
1.602×10–19
30.48
0.3048
1.285×10–3
3.766×10–7
0.324
1.356
1.818×10–3
To Obtain
Multiply
square feet (ft2)
coulomb (C)
meter (m)
cm, mercury (Hg)
in, mercury (Hg)
lbf/in2 abs (psia)
ft, water
pascal (Pa)
Pa
gallons–oil
joule (J)
kilowatt-hr (kWh)
ft-lbf
horsepower (hp)
watt (W)
ft-lbf/sec
Btu
hp-hr
joule (J)
watt (W)
foot (ft)
inch (in)
pascal·sec (Pa·s)
m2/sec (m2/s)
million gallons/day (mgd)
gallon
Liters
joule (J)
cm
meter (m)
Btu
kilowatt-hr (kWh)
calorie (g-cal)
joule (J)
horsepower (hp)
gallon (US Liq)
gallon (US Liq)
gallons of water
3.785
0.134
8.3453
liter (L)
ft3
pounds of water
tesla (T)
T
pound (lbm)
gamma (γ, Γ)
gauss
gram (g)
1×10–9
1×10–4
2.205×10–3
hectare
hectare
horsepower (hp)
hp
hp
hp
hp-hr
hp-hr
hp-hr
hp-hr
1×104
2.47104
42.4
745.7
33,000
550
2,544
1.98×106
2.68×106
0.746
square meters (m2)
acres
Btu/min
watt (W)
(ft-lbf)/min
(ft-lbf)/sec
Btu
ft-lbf
joule (J)
kWh
inch (in)
in of Hg
in of Hg
in of H2O
in of H2O
2.540
0.0334
13.60
0.0361
0.002458
centimeter (cm)
atm
in of H2O
lbf/in2 (psi)
atm
2
By
To Obtain
joule (J)
J
J
J/s
9.478×10–4
0.7376
1
1
Btu
ft-lbf
newton·m (N·m)
watt (W)
kilogram (kg)
kgf
kilometer (km)
km/hr
kilopascal (kPa)
kilowatt (kW)
kW
kW
kW-hour (kWh)
kWh
kWh
kip (K)
K
2.205
9.8066
3,281
0.621
0.145
1.341
3,413
737.6
3,413
1.341
3.6×106
1,000
4,448
pound (lbm)
newton (N)
feet (ft)
mph
lbf/in2 (psi)
horsepower (hp)
Btu/hr
(ft-lbf )/sec
Btu
hp-hr
joule (J)
lbf
newton (N)
liter (L)
L
L
L/second (L/s)
L/s
61.02
0.264
10–3
2.119
15.85
in3
gal (US Liq)
m3
ft3/min (cfm)
gal (US)/min (gpm)
meter (m)
m
3.281
1.094
feet (ft)
yard
metric ton
m/second (m/s)
mile (statute)
mile (statute)
mile/hour (mph)
mph
mm of Hg
mm of H2O
1,000
196.8
5,280
1.609
88.0
1.609
1.316×10–3
9.678×10–5
kilogram (kg)
feet/min (ft/min)
feet (ft)
kilometer (km)
ft/min (fpm)
km/h
atm
atm
newton (N)
N·m
N·m
0.225
0.7376
1
lbf
ft-lbf
joule (J)
pascal (Pa)
Pa
Pa·sec (Pa·s)
pound (lbm,avdp)
lbf
lbf-ft
lbf/in2 (psi)
psi
psi
psi
9.869×10–6
1
10
0.454
4.448
1.356
0.068
2.307
2.036
6,895
atmosphere (atm)
newton/m2 (N/m2)
poise (P)
kilogram (kg)
N
N·m
atm
ft of H2O
in of Hg
Pa
radian
180/π
degree
stokes
1×10–4
m2/s
therm
1×105
Btu
watt (W)
W
W
weber/m2 (Wb/m2)
3.413
1.341×10–3
1
10,000
Btu/hr
horsepower (hp)
joule/sec (J/s)
gauss