Technical Data - Conversion Data
°R = °F + 460
°F = 9/5°C + 32
°C= 5/9 (°F - 32)
Degrees Centigrade
0°C
0°C
°K - °C + 273
400
200
200
400
600
800
600
1000
1200
Basic Conversion Factors
1000
800
1400
1600
1800
2000
Degrees Fahrenheit
Common Conversion Factors
To Convert From
Heat Transfer
p.c.u./(hr)(ft²)(°C)
kg-cal./(hr)(m²)(°C)
g-cal./(sec.)(cm²)(°C)
watts/(cm²)(°C)
watts/(in²)(°F)
B.t.u./(hr)(ft²)(°F)
B.t.u./(hr)(ft²)(°F)
B.t.u./(hr)(ft²)(°F)
B.t.u./(hr)(ft²)(°F)
B.t.u./(hr)(ft²)(°F)
B.t.u./(hr)(ft²)(°F)
B.t.u./(hr)(ft²)(°F)
kg-cal./(hr)(m²)(°C)
watts/(m²)(°C)
Viscosity
centipoises
centipoises
centipoises
centipoises
centipoises
lb/(sec)(ft)
Thermal Conductivity
g-cal./(sec.)(cm²)(°C/cm)
watts/(cm²)(°C/cm)
g-cal/(hr)(cm²)(°C/cm)
B.t.u./(hr)(ft²)(°F/ft)
B.t.u./(hr)(ft²)(°F/in)
To
Multiply By
B.t.u./(hr)(ft²)(°F)
B.t.u./(hr)(ft²)(°F)
B.t.u./(hr)(ft²)(°F)
B.t.u./(hr)(ft²)(°F)
B.t.u./(hr)(ft²)(°F)
p.c.u./(hr)(ft²)(°C)
kg-cal./(hr)(m²)(°C)
g-cal./(sec.)(cm²)(°C)
watts/(cm²)(°C)
watts/(in²)(°F)
hp/(ft²)(°F)
joules/(sec.)(m²)(°C)
joules/(sec.)(m²)(°C)
joules/(sec.)(m²)(°C)
1.
0.2048
7,380.
1,760.
490.
1.
4.88
0.0001355
0.000568
0.00204
0.000394
5.678
1.163
1.0
g/(sec.)(cm) or poise
lb/(sec.)(ft.)
lb/(hr)(ft.)
kg/(hr)(m)
(newton)(sec.)/m²
(newton)(sec.)/m²
0.01
0.000672
2.42
3.60
0.001
1.488
B.t.u./(hr)(ft²)(°F/in)
B.t.u./(hr)(ft²)(°F/in)
B.t.u./(hr)(ft²)(°F/in)
joules/(sec.)(m²)(°C)
joules/(sec.)(m²)(°C)
2903.0
694.0
0.8064
1.731
0.1442
Special Conversion Factors
To Convert From
Atmospheres
Atmospheres
Atmospheres
Atmospheres
Atmospheres
Bars
Boiler H.P.
Btu
Btu/hr
Btu/sec.
Btu/sq. ft./min
Circular Mills
Cubic Feet Water
Cubic Feet/Minute
Cubic Feet/Minute
Cubic Feet/Second
Feet/Min.
Gallons (U.S.)
H.P. (British)
Pounds
To
mm Mercury (0°C/32°F)
Newtons sq. meter
Ft. Water (3.9°C/39.1°F)
Ins. Mercury (0°C/32°F)
Pounds/sq. in
Pounds/sq in
Kilowatts
Calories (gram)
Watts
Watts
Kilowatts/sq. ft.
Square Inces
Pounds
cm/sec
U.S. Gallons/sec.
U.S. Gallons/min.
Miles/Hour
Gallons (Imperial)
Watts
Grains
Conversion Data
D54
Caloritech™
S.I. Conversions
Multiply By
760.
101,325.
33.90
29.921
14.696
14.504
9.803
252.
0.29307
1,054.4
0.1758
7.854 x 10-7
62.37
472.0
0.1247
448.8
0.011364
0.8327
745.7
7,000.
Velocity
1 fps
= 0.3048 m/s
1 fpm
= 0.00508 m/s
1 mph
= 0.44704 m/s
1 mph
= 1.60934 km/h
Length
1 inch
= 25.4 mm
1 foot
= 0.3048 m
1 mile
= 1.60934 km
Area
1 sq. inch
= 6.4516 cm²
1 sq. foot
= 0.09290 m³
Volume
1 inch³
= 16.38706 cm³
1 foot³
= 0.02832 m³
Capacity Imp. Measure
1 fluid oz.
= 28.41306 ml
1 gallon
= 4.54609 l
Weight or Mass
1 oz.
= 28.34952 g
1 lb.
= 0.45359 kg
Pressure
1 psi
= 6.89476 kPa
1 bar
= 105Pa
Energy
1 kWh
= 3.6 MJ
1 watt-hour = 3.6 kJ
Frequency
1 cps
= 1 Hz
Power
1 Btu/h(int.)
= 0.29307 W
1 Btu/s(int.)
= 1.05506 kW
1 HP mech. (UK) = 0.74570 kW
1 HP boiler
= 9.8095 kW
Density
1 lb/ft³
= 16.01846 kg/m³
1 lb/gal(imp.)
= 99.77633 kg/m³
1 lb/gal(US)
= 119.82640 kg/m³
Thermal Conductivity
1 Btu.ft/ft²h.°F
= 1.73073 W/m°C
1 Btu.in/ft²h.°F
= 0.14423 W/m°C
Volumetric Flow
1 ft³/s
= 0.028317 m³/s
1 ft³/s
= 101.9406 m³/s
Kinematic Viscosity
1 ft²/sq
= 0.092903 m²/s
1 centistoke (cSt) = 1.0 x 10-6 m²/s
Dynamic Viscosity
1 centipoise (cP) = 0.001 Pa-s
1 lb./ft.s
= 1.488164 Pa-s
Heat Transfer
1 Btu/ft²h.°F
= 5.67826 w/m²°C
1 kcal/m²h.°F
= 1.163 W/m²°C
Specific Energy
1 Btu/lb.
= 2.326 kJ/kg
1 cal/g
= 4.1868 kJ/kg
Specific Heat
1 btu/lb.°F
= 4.1868 kJ/kg°C
Derived Units with Special Names
Measurement
Frequency
Force
Pressure
Energy
Power
Electric Potential
Electric Resistance
Electric Conductance
Electric Charge
Capacitance
Magnetic Flux
Magnetic Flux Density
Inductance
Luminous Flux
Illumination
Temperature
Pressure
Volume
Prefix
teragigamegakilodecicenti-
Unit
hertz
newton
pascal
joule
watt
volt
ohm
siemens
coulomb
farad
weber
tesla
henry
lumen
lux
Celsius Degree
bar
liter
Symbol
Hz
N
Pa
J
W
V
Ω
S
C
F
Wb
T
H
lm
lx
°C
bar
l
The Preferred Prefixes
Symbol
T
G
M
k
d
c
Meaning
1012
109
106
103
10-1
10-2
Prefix
millimicronanopicofemtoatto-
Symbol
m
µ
n
p
f
a
Derivation
s-1
kg•m/s2
N/m2
N•m
J/s
W/A
V/A
1/ Ω
A•s
C/V
V•s
Wb/m²
Wb/A
cd•sr
lm/m²
K - 273.15
105 Pa
dm³
Meaning
10-3
10-6
10-9
10-12
10-15
10-18
Technical Data