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To Convert From: To : Multiply By:
Length
Feet (ft) meters(mm) 0.30481
Inches (In) millimeters (mm) 25.4
Area
Square Feet (ft
2
) square meters (m
2
) 0.093
Square Inches (In
2
) square millimeters (mm
2
) 645.2
Volume
Cubic Feet (ft
2
) Cubic meters (m
3
) 0.0283
Cubic Inches (In
3
) Cubic mm (mm
3
) 16387
Gallons (gal) Iitres (L) 3.875
Gallons (gal) cubic meters (m
3
) 0.003785
Flow
Cubic feet/min (cfm) cubic meters/second (m
3
/s) 0.000472
Cubic Feet/min (cfm) cubic metrs/hr (m
3
/hour) 1.69884
Gallons/minute (gpm) cubic meters/hr (m
3
/hour) 0.2271
Gallons/minute (gpm) Iitres/second (l/s) 0.06308
Velocity
Feet per minute (ft/m) meters per second (m/s) 0.00508
Feet per second (ft/s) meters per second (m/s) 0.3048
To Convert From: To : Multiply By:
Energy and Power and Capacity
British Thermal Units (Btu/h) Kilowatt (kW) 0.000293
British Thermal Units (Btu) KCalorie (Kcal) 0.252
Tons (refrig. effect) Kilowatt (refrig. effect) 3.516
Tons (refrig. effect) Kilocalories per hour (Kcal/hr) 3024
Horsepower Kilowatt (kW) 0.7457
Pressure
Feet of water (ftH
2
0) Pascals (pa) 2990
Inches of water (inH
2
0) Pascals (pa) 249
Pounds per square inch (psi) Pascals (pa) 6895
PSI Bar or kg/cm
2
6.895 x 10
-2
Weight
Ounches (oz) Kilograms (kg) 0.02835
Pounds (Ibs) Kilograms (kg) 0.4536
Fouling factors for heat exchangers
0.00075 ft
2 o
F hr/Btu =0.132 m
2 o
K/kW
0.00025 ft
2 o
F hr/Btu =0.044 m
2 o
K/kW
Temperature-Centigrade (
o
C) versus Fahrenheit (
o
F)
Note: The center columns of numbers, referred tp as BASE TEMP., is the temperature in either degrees Fahrenheit (
o
F) or Centigrade (
o
C), whichever is desired to
convert into the other. If degrees Centrigrade is given, read degrees Fahrenheit to the right. If degrees Fahrenheit is given, read degrees Centigrade to the left.
Temperature
℃
C or F
°
F
-40.0
-39.4
-38.9
-38.3
-37.8
-37.2
-36.7
-36.1
-35.6
-35.0
-34.4
-33.9
-33.3
-32.8
-32.2
-31.7
-31.1
-30.6
-30.0
-29.4
-28.9
-28.3
-27.8
-27.2
-26.7
-26.1
-25.6
-25.0
-24.4
-23.9
-23.3
-22.8
-22.2
-21.7
-21.1
-20.6
-20.0
-19.4
-18.9
-18.3
-17.8
-17.2
-16.7
-16.1
-15.6
-40
-39
-38
-37
-36
-35
-34
-33
-32
-31
-30
-29
-28
-27
-26
-25
-24
-23
-22
-21
-20
-19
-18
-17
-16
-15
-14
-13
-12
-11
-10
-9
-8
-7
-6
-5
-4
-3
-2
-1
0
+1
+2
+3
+4
-40
-38.2
-36.4
-34.6
-32.8
-31.0
-29.2
-27.4
-25.6
-23.8
-22.0
-20.2
-18.4
-16.6
-14.8
-13.0
-11.2
-9.4
-7.6
-5.8
-4.0
-2.2
-0.4
+1.4
+3.2
+5.0
+6.8
+8.6
+10.4+
+12.2
+14.0
+15.8
+17.6
+19.4
+21.2
+23.0
+24.8
+26.6
+28.4
+30.2
+32.0
+33.8
+35.6
+37.4
+39.2
Temperature
℃
C or F
°
F
-15.0
-14.4
-13.9
-13.3
-12.8
-12.2
-11.7
-11.1
-10.6
-10.0
-9.4
-8.9
-8.3
-7.8
-7.2
-6.7
-6.1
-5.5
-5.0
-4.4
-3.9
-3.3
-2.8
-2.2
-1.7
-1.1
-0.6
0.0
+0.6
+1.1
+1.7
+2.2
+2.8
+3.3+
3.9
+4.4
+5.0
+5.5
+6.1
+6.7
+7.2
+7.8
+8.3
+8.9
+9.4
+5
+6
+7
+8
+9
+10
+11
+12
+13
+14
+15
+16
+17
+18
+19
+20
+21
+22
+23
+24
+25
+26
+27
+28
+29
+30
+31
+32
+33
+34
+35
+36
+37
+38
+39
+40
+41
+42
+43
+44
+45
+46
+47
+48
+49
+41.0
+42.8
+44.6
+46.4
+48.2
+50.0
+51.8
+53.6
+55.4
+57.2
+59.0
+60.8
+62.6
+64.4
+66.2
+68.0
+69.8
+71.6
+73.4
+75.2
+77.0
+78.8
+80.6
+82.4
+84.2
+86.0
+87.8
+89.6
+91.4
+93.2
+95.0
+96.8
+98.6
+100.4
+102.2
+104.0
+105.8
+107.6
+109.4
+111.2
+113.0
+114.8
+116.6
+118.4
+120.2
Temperature
℃
C or F
°
F
+10.0
+10.6
+11.1
+11.7
+12.2
+12.8
+13.3
+13.9
+14.4
+15.0
+15.6
+16.1
+16.7
+17.2
+17.8
+18.3
+18.9
+19.4
+20.0
+20.6
+21.1
+21.7
+22.2
+22.8
+23.2
+23.9
+24.4
+25.0
+25.6
+26.1
+26.7
+27.2
+27.8
+28.3
+28.9
+29.4
+30.0
+30.6
+31.1
+31.7
+32.2
+32.8
+33.3
+33.9
+34.4
+50
+51
+52
+53
+54
+55
+56
+57
+58
+59
+60
+61
+62
+63
+64
+65
+66
+67
+68
+69
+70
+71
+72
+73
+74
+75
+76
+77
+78
+79
+80
+81
+82
+83
+84
+85
+86
+87
+88
+89
+90
+91
+92
+93
+94
+122.0
+123.8
+125.6
+127.4
+129.2
+131.0
+132.8
+134.6
+136.4
+138.2
+140.0
+141.8
+143.6
+145.4
+147.2
+149.0
+150.8
+152.6
+154.4
+156.2
+158.0
+159.8
+161.6
+163.4
+165.2
+167.0
+168.8
+170.6
+172.4
+174.2
+176.0
+177.8
+179.6
+181.4
+183.2
+185.0
+186.8
+188.6
+199.4
+192.2
+194.0
+195.8
+197.6
+199.4
+201.2
257.0Temperature
℃
C or F
°
F
+35.0
+35.6
+36.1
+36.7
+37.2
+37.8
+38.3
+38.9
+39.4
+40.0
+40.6
+41.1
+41.7
+42.2
+42.8
+43.3
+43.9
+44.4
+45.0
+45.6
+46.1
+46.1
+47.2
+47.8
+48.3
+48.9
+49.4
+50.0
+50.6
+51.1
+51.7
+52.2
+52.8
+53.3
+53.9
+54.4
+55.0
+55.6
+56.1
+56.7
+57.2
+57.8
+58.3
+58.9
+59.4
+95
+96
+97
+98
+99
+100
+101
+102
+103
+104
+105
+106
+107
+108
+109
+110
+111
+112
+113
+114
+115
+116
+117
+118
+119
+120
+121
+122
+123
+124
+125
+126
+127
+128
+129
+130
+131
+132
+133
+134
+135
+136
+137
+138
+139
+203.0
+204.8
+206.6
+208.4
+210.2
+212.0
+213.8
+215.6
+217.4
+219.2
+221.0
+222.8
+224.6
+226.4
+228.2
+230.0
+231.8
+233.6
+235.4
+237.2
+239.0
+240.8
+242.6
+244.4
+246.2
+248.0
+249.8
+251.6
+253.4
+255.2
+257.0
+258.8
+260.5
+262.4
+264.2
+266.0
+257.8
+269.6
+271.4
+273.2
+275.0
+276.8
+278.6
+280.4
+282.2
Temperature
℃
C or F
°
F
+60.0
+60.6
+61.1
+61.7
+62.2
+62.8
+63.3
+63.9
+64.4
+65.0
+65.6
+66.1
+66.7
+67.2
+67.8
+68.3
+68.9
+69.4
+70.0
+70.6
+71.1
+71.7
+72.2
+72.8
+73.3
+73.9
+74.4
+75.0
+75.6
+76.1
+76.7
+77.2
+77.8
+78.3
+78.9
+79.4
+80.0
+80.6
+81.1
+81.7
+82.2
+82.8
+83.3
+83.9
+84.4
+140
+141
+142
+143
+144
+145
+146
+147
+148
+149
+150
+151
+152
+153
+154
+155
+156
+157
+158
+159
+160
+161
+162
+163
+164
+165
+166
+167
+168
+169
+170
+171
+172
+173
+174
+175
+176
+177
+178
+179
+180
+181
+182
+183
+184
+284.0
+285.8
+287.6
+289.4
+291.2
+293.0
+294.8
+296.6
+298.4
+300.2
+302.0
+303.8
+305.6
+307.4
+309.2
+311.0
+312.8
+314.6
+316.4
+318.2
+320.0
+321.8
+323.6
+325.4
+327.2
+329.0
+330.8
+332.6
+334.4
+336.2
+338.0
+339.8
+341.6
+343.4
+345.2
+347.0
+348.8
+350.6
+352.4
+354.2
+356.0
+357.8
+359.8
+361.4
+363.2
FOR INTERPOLATION IN THE ABOVE TABLE USE:
BASE TEMPERATURE(
℃
or°F) 1 2 3 4 5 6 7 8 9
DEGREES CENTIGRADE: 0.56 1.11 1.67 2.22 2.78 3.33 3.89 4.44 5.00 5.56
DEGREES FAHRENHEIT: 1.8 3.6 5.4 7.2 9.0 10.8 12.6 14.4 16.2 18.0
CTV-PRC001-E4
Conversion Table