|
Multiply
|
SI symbol
|
by
|
to obtain
|
|
Length
|
|
|
|
|
nanometres
|
nm
|
10
|
angstroms
|
|
millimetres
|
mm
|
39.37
|
thous
|
|
millimetres
|
mm
|
0.03937
|
inches
|
|
millimetres
|
m
|
3.281
|
feet
|
|
metres
|
m
|
1.0936
|
yards
|
|
kilometres
|
km
|
0.621 4
|
miles
|
|
Area
|
|
|
|
|
square millimetres
|
mm2
|
1.550 x 10-3
|
square inches
|
|
square
centimetres
|
cm2
|
0.1550
|
square inches
|
|
square metres
|
m2
|
10.764
|
square feet
|
|
Volume
|
|
|
|
|
cubic centimetres
|
cm3
|
0.061 0
|
cubic inches
|
|
millilitres
|
ml
|
0.061 0
|
cubic inches
|
|
cubic decimetres
|
dm3
|
0.03531
|
cubic
feet
|
|
litres
|
litre
|
0.03531
|
cubic
feet
|
|
litres
|
litre
|
1.760
|
pints
|
|
litres
|
litre
|
0.220 0
|
gallons
|
|
cubic metres
|
m3
|
35.315
|
cubicfeet
|
|
cubic metres
|
m3
|
220.0
|
gallons
|
|
standard
cubic metres,
|
m3(st)
|
35.99
|
standard
cubic feet,
gas (1013.25 mbar, 150C, dry) (30 in Hg, 600F, sat)
|
|
Mass
|
|
|
|
|
grams
|
g
|
15.432
|
grains(gr)
|
|
grams
|
g
|
0.035 27
|
ounces
(avoir)
|
|
kilograms
|
kg
|
2.205
|
pounds
(avoir)
|
|
kilograms
|
kg
|
0.01968
|
hundredweights
|
|
kilograms
|
kg
|
9.842x10-4
|
tons(UK)
|
|
tonnes
|
t
|
0.984 2
|
tons (UK)
|
|
Velocity
|
|
|
|
|
metres/second
|
m/s
|
3.281
|
feet/second
|
|
metres/second
|
m/s
|
2.237
|
miles/hour
|
|
kilometres/hour
|
km/h
|
0.621 4
|
miles/hour
|
|
Flow
Rate
|
|
|
|
|
millilitres/second
|
ml/s
|
0.127 1
|
cubic feet/hour
|
|
millilitres/second
|
ml/s
|
0.791 9
|
gallons/hour
|
|
cubic
centimetres/second
|
cm3/s
|
0.127 1
|
cubic feet/hour
|
|
cubic
centimetres/second
|
cm3/s
|
0.791 9
|
gallons/hour
|
|
litres/second
|
litre/s
|
13.20
|
gallons/minute
|
|
litres/hour
|
litre/h
|
0.03531
|
cubic
feet/hour
|
|
litres/hour
|
litre/h
|
0.2200
|
gallons/hour
|
|
cubic metres/hour
|
m3/h
|
35.315
|
cubic
feet/hour
|
|
cubic
metres/hour
|
m3/h
|
220.0
|
gallons/hour
|
|
|
|
3.666
|
gallons/minute
cubic metres/second
|
|
|
m3/s
|
2.119
x 103
|
cubic
feet/minute
|
|
standard cubic metres/hour, gas
|
m3(st)/h
|
35.99
|
standard
cubic feet/ hour, gas
|
|
grams/second
|
g/s
|
7.937
|
pounds/hour
|
|
kilograms/hour
|
kg/h
|
2.205
|
pounds/hour
|
|
Force
|
|
|
|
|
newtons
|
N
|
0.224
8
|
pounds
force
|
|
newtons
|
N
|
0.102
0
|
kilograms
force
|
|
Moment of Force (Torque)
|
|
|
|
|
newton metres
|
N
m
|
0.737
6
|
pound-force
feet
|
|
newton
metres
|
N
m
|
0.102
0
|
kilogram-forcemetres
|
|
Pressure & Stress
|
|
|
|
|
millibars
|
mbar
|
0.401 5
|
inches
w.g. (40C)
|
|
millibars
|
mbar
|
10.197
|
millimetres w.g. (40C)
|
|
millibars
|
mbar
|
0.029 53
|
inches Hg (00C)
|
|
millibars
|
mbar
|
0.750
1
|
millimetres
Hg (00C)
|
|
millibars
|
mbar
|
0.750
1
|
tor
|
|
millibars
|
mbar
|
0.014
50
|
pounds-force/sq.
inch
|
|
millibars
|
mbar
|
103
|
dynes/sq.
centimetre
|
|
bars
|
bar
|
0.986
9
|
standard
atmospheres bars
|
|
|
bar
|
14.50
|
pounds-force/sq.
inch bars
|
|
|
bar
|
6.475x10-3
|
tons-force/sq.inch
|
|
bars
|
bar
|
1.020 x 10-2
|
kilograms
force/sq.mm
|
|
newtons/sq.
millimetre
|
N/mm2
|
0.064 75
|
tons-force/sq.
inch
|
|
newtons/sq.
millimetre
|
N/mm2
|
0.102 0
|
kilograms-force/sq.
mm
|
|
metres of water
|
mm
|
3.281
|
feet of water
|
|
Multiply
|
SI symbol
|
by
|
to obtain
|
|
Heat
|
|
|
|
|
joules
|
J
|
9.48 x 10-4
|
British thermal units
|
|
joules
|
J
|
0.238 8
|
calories
|
|
megajoules
|
MJ
|
9.48x10-3
|
therms
|
|
megajoules
|
MJ
|
0.277 8
|
kilowatt hours
|
|
Heat
Flow
|
|
|
|
|
watts
|
W
|
3.412
|
Btu/hour
|
|
kilowatts
|
kW
|
3.412x103
|
Btu/hour
|
|
kilowatts
|
kW
|
3.6
|
megajoules/hour
|
|
megajoules per hour
|
MJ/h
|
947.8
|
Btu/hour
|
|
megajoules per hour
|
MJ/h
|
0.277 8
|
kilowatts
|
|
Refrigeration
|
|
|
|
|
kilowatts
|
kW
|
0.284 3
|
tons of refrigeration
|
|
megajoules/hour
|
MJ/h
|
0.078 98
|
tons of refrigeration
|
|
Intensity
of Heat Flow Rate
|
|
|
|
|
watts/sq. metre
|
W/m2
|
0.317
0
|
Btu/sq.
foot hour
|
|
Thermal
Conductance
|
|
|
|
|
watts/sq. metre 0C
|
W/m2 0C
|
0.176 1
|
Btu/sq. ft. hour0F
|
|
Calorific
Value
|
|
|
|
|
kilojoules/kilogram
|
kJ/kg
|
0.429 9
|
Btu/pound
|
|
kilojoules/kilogram
|
kJ/kg
|
0.238 8
|
calories/gram
|
|
megajoules/kilogram
|
MJ/kg
|
429.9
|
Btu/pound
|
|
megajoules/standard
|
MJ/m 3(st)
|
26.34
|
Btu/standard
|
|
cubic metre
(gas)
|
|
|
cubic foot (gas)
|
|
Specific
Heat
|
|
|
|
|
kilojoules/kilogram 0C
|
kJ/kg 0C
|
0.238 8
|
Btu/pound 0F
|
|
Multiply
|
SI
symbol
|
by
|
to
obtain
|
|
Power
|
|
|
|
|
kilowatts
|
kW
|
1.341
|
horsepower
|
|
Dynamic
Viscosity
|
|
|
|
|
newton seconds/sq. metre
|
N
s/m2
|
2.419
x 103
|
pounds/foot
hour
|
|
centipoises
|
cP
|
2.419
|
pounds/foot
hour
|
|
Frequency
|
|
|
|
|
hertz
|
Hz
|
1
|
cycles/second
|
|
Concentration
in Gas
|
|
|
|
|
milligrams/standard
|
mg/m3(st)
|
0.042
88
|
grains/100
standard
|
|
cubic metre
|
|
|
cubic
feet
|
|
milligrams/standard
|
mg/m3(st)
|
0.061
25
|
pounds/106
standard
|
|
cubic metre
|
|
|
cubic
feet
|
|
Temperature
Difference
|
|
|
|
|
degreesCelsius
|
0C
|
1.8
|
degrees
Fahrenheit
|
|
kelvins
|
K
|
1.8
|
degrees
Fahrenheit
|
|
Temperature
Value Conversions
|
|
|
|
|
To convert 0C to 0F: -
|
|
1
.80C + 32
|
Temperature
in 0F
|
|
To convert K to 0F: -
|
|
1.8K
- 459.67
|
Temperature
in 0F
|
|
To convert K to 0C: -
|
|
K-273.15
|
Temperature
in 0C
|
|
To convert K to 0R (Rankine): -
|
1.8
x K
|
Temperature
in 0R
|
|
|
For more
information contact Mearsecroft
Created and updated by Spiders
Webs
|