Note: while some of the data and conversion factors on this page might not be exact, the information falls well within the error range needed for calculations in class.
The following information is found on this page:
Convert pressure to atmospheres by dividing kPa by 101.325
Convert pressure to mm Hg by dividing kPa by 101.325, then multiplying by 760
Energy and heat
To convert from to multiply by
British thermal joule (J) 1055.06
unit(Btu)
calorie (cal) joule (J) 4.187
kilowatt-hour (kwh) joule (J) 3,600,000
British thermal unit watt (W) 0.2931
per hour (Btu/hr)
Component Mole Per Cent Molar Mass
N2 78.084 28.013
O2 20.948 31.998
Ar 0.934 29.948
CO2 0.0314 44.010
Ne 0.001818 20.183
He 0.000524 4.003
CH4 0.002 16.043
Kr 0.000114 83.80
H2 0.00005 2.016
N2O 0.00005 44.013
Xe 0.0000087 131.30
Temperature kPa Temperature kPa
0 0.61129 50 12.344
1 0.65716 51 12.97
2 0.70605 52 13.623
3 0.75813 53 14.303
4 0.81359 54 15.012
5 0.8726 55 15.752
6 0.93537 56 16.522
7 1.0021 57 17.324
8 1.073 58 18.159
9 1.1482 59 19.028
10 1.2281 60 19.932
11 1.3129 61 20.873
12 1.4027 62 21.851
13 1.4979 63 22.868
14 1.5988 64 23.925
15 1.7056 65 25.022
16 1.8185 66 26.163
17 1.938 67 27.347
18 2.0644 68 28.576
19 2.1978 69 29.852
20 2.3388 70 31.176
21 2.4877 71 32.549
22 2.6447 72 33.972
23 2.8104 73 35.448
24 2.985 74 36.978
25 3.169 75 38.563
26 3.3629 76 40.205
27 3.567 77 41.905
28 3.7818 78 43.665
29 4.0078 79 45.487
30 4.2455 80 47.373
31 4.4953 81 49.324
32 4.7578 82 51.342
33 5.0335 83 53.428
34 5.3229 84 55.585
35 5.6267 85 57.815
36 5.9453 86 60.119
37 6.2795 87 62.499
38 6.6398 88 64.958
39 6.9969 89 67.496
40 7.3814 90 70.117
41 7.784 91 72.823
42 8.2054 92 75.614
43 8.6463 93 78.494
44 9.1075 94 81.465
45 9.5895 95 84.529
46 10.094 96 87.688
47 10.62 97 90.945
48 11.171 98 94.301
49 11.745 99 97.759
From
To
Multiply by:
Pascals (Pa)
pounds per square inch (psi)
0.00015
pounds per square foot
0.021
newtons per square meter
1
Pounds per square inch (psi)
atmospheres
0.068
pounds per square foot
144
Pascals
6895
foot of water 60º F
2.3
Atmospheres
psi
14.7
lb per ft²
2117
Pa
101325
inch of water 60º F
psi
0.036
lb per ft²
5.2
Pa
248.8
foot of water 60º F
psi
0.4331
lb per ft²
62.36
Pa
2986
To convert from to multiply by
Power
horsepower (hp) watt (W) 745.69
(550 ft-lb/sec)
Velocity
mile per hour (mph) kilometer per hour(km/hr) 1.61
mile per hour (mph) meter per second (m/s) 0.45
Quantity From English To Metric Multiply
Units Units by
Length mile km 1.609
yard m 0.914
foot m 0.305
inch mm 25.4
Area square mile km2 2.59
acre m2 4047
acre hectare 0.405
square yard m2 0.836
square foot m2 0.093
square inch mm2 645.2
Volume acre foot m3 1 23
cubic yard m3 0.765
cubic foot m3 0.028
cubic foot L (1000 cm3) 28.32
gallon L (1000 cm3) 3.785
Mass lb kg 0.454
Force lb N 4.45
Moment of mass lb . ft kg . m 0.138
Moment of inertia lb . ft2 kg . m2 0.042
Power ton (refrig) kW 3.517
Btu/s kW 1.054
hp (electric) W 745.7
Btu/h W 0.2931
Velocity, speed ft/s m/s 0.305
Acceleration f/s2 m/s2 0.305
Momentum lb . ft/sec kg . m/s 0.138
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Note:
12 inches = 1 foot
5,280 feet = 1 mile
3 feet = 1 yard
2.2 pounds = 1 kilogram
2.54 centimeters = 1 inch
100 centimeters = 1 meter
16 ounces = 1 pound
1 ton = 2,000 pounds
One U.S. gallon of water weighs 8.34 pounds (U.S.) at 60 degrees F.
One cubic foot of water weighs 62.4 pounds (U.S.).
One milliliter of water has a mass of 1 gram and has a volume of one cubic centimeter.