ENGINEERING & TECHNOLOGY UNITS CONVERSION TABLES
Overview
Units Conversion Tables
Table 1 Table 2 Table 3 Table 4 Table 5 Table 6 Table 7 Table 8 Table 9 Table 10 Table 11 Table 12 Table 13 Table 14 Table 15 Table 16
Multiples and Submultiples of SI Units
Length Units , Area Units , Volume Units , Mass Units , Density Units , Volumetric Liquid Flow Units , Volumetric Gas Flow Units , Mass Flow Units , High Pressure Units , Low Pressure Units , Speed Units , Torque Units , Dynamic Viscosity Units , Kinematic Viscosity Units , Temperature Conversion Formulas
Table 1: Multiples and Submultiples of SI units
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Prefix |
Symbol |
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Multiplying Factor |
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exa |
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E |
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1018 |
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1 000 000 000 000 000 000 |
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peta |
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P |
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1 000 000 000 000 000 |
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1015 |
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tera |
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T |
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1012 |
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1 000 000 000 000 |
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giga |
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G |
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109 |
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1 000 000 000 |
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mega |
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M |
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106 |
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1 000 000 |
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kilo |
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k |
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103 |
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1 000 |
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hecto* |
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h |
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102 |
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100 |
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deca* |
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da |
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10 |
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10 |
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deci* |
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d |
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10-1 |
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0.1 |
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centi |
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c |
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10-2 |
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0.01 |
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milli |
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m |
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0.001 |
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10-3 |
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micro |
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u |
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10-6 |
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0.000 001 |
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nano |
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n |
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10-9 |
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0.000 000 001 |
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pico |
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p |
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10-12 |
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0.000 000 000 001 |
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femto |
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f |
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10-15 |
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0.000 000 000 000 001 |
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atto |
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a |
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10-18 |
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0.000 000 000 000 000 001 |
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* these prefixes are not normally used |
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Table 2: Length Units
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Millimeters |
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Centimeters |
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Meters |
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Kilometers |
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Inches |
Feet |
Yards |
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Miles |
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mm |
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cm |
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m |
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km |
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in |
ft |
yd |
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mi |
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1 |
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0.1 |
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0.001 |
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0.000001 |
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0.03937 |
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0.003281 |
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0.001094 |
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6.21e-07 |
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10 |
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1 |
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0.01 |
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0.00001 |
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0.393701 |
0.032808 |
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0.010936 |
0.000006 |
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1000 |
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100 |
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1 |
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0.001 |
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39.37008 |
3.28084 |
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1.093613 |
0.000621 |
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1000000 |
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100000 |
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1000 |
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1 |
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39370.08 |
3280.84 |
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1093.613 |
0.621371 |
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25.4 |
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2.54 |
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0.0254 |
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0.000025 |
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1 |
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0.083333 |
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0.027778 |
0.000016 |
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304.8 |
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30.48 |
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0.3048 |
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0.000305 |
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12 |
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1 |
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0.333333 |
0.000189 |
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914.4 |
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91.44 |
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0.9144 |
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0.000914 |
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36 |
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3 |
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1 |
0.000568 |
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1609344 |
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160934.4 |
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1609.344 |
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1.609344 |
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63360 |
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5280 |
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1760 |
1 |
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Table 3: Area Units
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Millimeter |
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Centimeter |
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Meter |
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Inch |
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Foot |
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Yard |
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square |
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square |
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square |
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square |
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square |
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square |
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mm2 |
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cm2 |
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m2 |
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in2 |
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ft2 |
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yd2 |
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1 |
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0.01 |
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0.000001 |
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0.00155 |
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0.000011 |
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0.000001 |
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100 |
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1 |
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0.0001 |
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0.155 |
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0.001076 |
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0.00012 |
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1000000 |
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10000 |
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1 |
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1550.003 |
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10.76391 |
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1.19599 |
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645.16 |
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6.4516 |
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0.000645 |
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1 |
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0.006944 |
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0.000772 |
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92903 |
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929.0304 |
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0.092903 |
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144 |
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1 |
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0.111111 |
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836127 |
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8361.274 |
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0.836127 |
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1296 |
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9 |
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1 |
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Table 4: Volume Units
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Centimeter |
Meter |
Liter |
Inch |
Foot |
US |
Imperial |
US barrel (oil) |
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cube |
cube |
cube |
cube |
gallons |
gallons |
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cm3 |
m3 |
ltr |
in3 |
ft3 |
US gal |
Imp. gal |
US brl |
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1 |
0.000001 |
0.001 |
0.061024 |
0.000035 |
0.000264 |
0.00022 |
0.000006 |
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1000000 |
1 |
1000 |
61024 |
35 |
264 |
220 |
6.29 |
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1000 |
0.001 |
1 |
61 |
0.035 |
0.264201 |
0.22 |
0.00629 |
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16.4 |
0.000016 |
0.016387 |
1 |
0.000579 |
0.004329 |
0.003605 |
0.000103 |
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28317 |
0.028317 |
28.31685 |
1728 |
1 |
7.481333 |
6.229712 |
0.178127 |
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3785 |
0.003785 |
3.79 |
231 |
0.13 |
1 |
0.832701 |
0.02381 |
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4545 |
0.004545 |
4.55 |
277 |
0.16 |
1.20 |
1 |
0.028593 |
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158970 |
0.15897 |
159 |
9701 |
6 |
42 |
35 |
1 |
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Table 5: Mass Units
| Grams |
Kilograms |
Metric tonnes |
Short ton |
Long ton |
Pounds |
Ounces |
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| g |
kg |
tonne |
shton |
Lton |
lb |
oz |
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| 1 |
0.001 |
0.000001 |
0.000001 |
9.84e-07 |
0.002205 |
0.035273 |
| 1000 |
1 |
0.001 |
0.001102 |
0.000984 |
2.204586 |
35.27337 |
| 1000000 |
1000 |
1 |
1.102293 |
0.984252 |
2204.586 |
35273.37 |
| 907200 |
907.2 |
0.9072 |
1 |
0.892913 |
2000 |
32000 |
| 1016000 |
1016 |
1.016 |
1.119929 |
1 |
2239.859 |
35837.74 |
| 453.6 |
0.4536 |
0.000454 |
0.0005 |
0.000446 |
1 |
16 |
| 28 |
0.02835 |
0.000028 |
0.000031 |
0.000028 |
0.0625 |
1 |
Table 6: Density Units
| Gram/milliliter |
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Kilogram/meter cube |
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Pound/foot cube |
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Pound/inch cube |
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| g/ml |
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kg/m3 |
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lb/ft3 |
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lb/in3 |
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| 1 |
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1000 |
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62.42197 |
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0.036127 |
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| 0.001 |
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1 |
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0.062422 |
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0.000036 |
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| 0.01602 |
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16.02 |
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1 |
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0.000579 |
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| 27.68 |
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27680 |
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1727.84 |
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1 |
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Table 7: Volumetric Liquid Flow Units
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| Liter/second |
Liter/minute |
Meter |
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Foot |
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Foot |
US |
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US barrels |
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| cube/hour |
cube/minute |
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cube/hour |
gallons/minute |
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(oil)/day |
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| L/sec |
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L/min |
M3/hr |
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ft3/min |
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ft3/hr |
gal/min |
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US brl/d |
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| 1 |
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60 |
3.6 |
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2.119093 |
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127.1197 |
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15.85037 |
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543.4783 |
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| 0.016666 |
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1 |
0.06 |
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0.035317 |
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2.118577 |
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0.264162 |
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9.057609 |
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| 0.277778 |
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16.6667 |
1 |
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0.588637 |
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35.31102 |
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4.40288 |
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150.9661 |
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| 0.4719 |
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28.31513 |
1.69884 |
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1 |
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60 |
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7.479791 |
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256.4674 |
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| 0.007867 |
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0.472015 |
0.02832 |
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0.01667 |
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1 |
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0.124689 |
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4.275326 |
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| 0.06309 |
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3.785551 |
0.227124 |
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0.133694 |
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8.019983 |
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1 |
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34.28804 |
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| 0.00184 |
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0.110404 |
0.006624 |
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0.003899 |
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0.2339 |
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0.029165 |
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1 |
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Table 8: Volumetric Gas Flow Units
| Normal meter cube/hour |
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Standard cubic feet/hour |
Standard cubic feet/minute |
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| Nm3/hr |
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scfh |
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scfm |
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1 |
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35.31073 |
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0.588582 |
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| 0.02832 |
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1 |
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0.016669 |
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1.699 |
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59.99294 |
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1 |
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Table 9: Mass Flow Units
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| Kilogram/hour |
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Pound/hour |
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Kilogram/second |
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Ton/hour |
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| kg/h |
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lb/hour |
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kg/s |
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t/h |
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| 1 |
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2.204586 |
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0.000278 |
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0.001 |
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| 0.4536 |
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1 |
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0.000126 |
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0.000454 |
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| 3600 |
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7936.508 |
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1 |
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3.6 |
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| 1000 |
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2204.586 |
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0.277778 |
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1 |
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Table 10: High Pressure Units
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Kilogram |
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| Bar |
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Pound/square |
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Kilopascal |
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Megapascal |
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force/ |
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Millimeter |
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Atmospheres |
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inch |
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centimeter |
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of mercury |
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square |
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| bar |
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psi |
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kPa |
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MPa |
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kgf/cm2 |
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mm Hg |
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atm |
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| 1 |
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14.50326 |
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100 |
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0.1 |
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1.01968 |
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750.0188 |
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0.987167 |
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| 0.06895 |
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1 |
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6.895 |
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0.006895 |
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0.070307 |
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51.71379 |
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0.068065 |
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| 0.01 |
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0.1450 |
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1 |
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0.001 |
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0.01020 |
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7.5002 |
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0.00987 |
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| 10 |
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145.03 |
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1000 |
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1 |
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10.197 |
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7500.2 |
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9.8717 |
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| 0.9807 |
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14.22335 |
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98.07 |
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0.09807 |
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1 |
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735.5434 |
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0.968115 |
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| 0.001333 |
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0.019337 |
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0.13333 |
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0.000133 |
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0.00136 |
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1 |
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0.001316 |
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| 1.013 |
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14.69181 |
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101.3 |
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0.1013 |
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1.032936 |
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759.769 |
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1 |
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Table 11: Low Pressure Units
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| Meter of |
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Foot of |
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Centimeter of |
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Inches of |
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Inches of |
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Pascal |
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| water |
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water |
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mercury |
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mercury |
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water |
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| mH2O |
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ftH2O |
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|
|
cmHg |
|
|
|
inHg |
|
inH2O |
|
Pa |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 1 |
|
|
|
3.280696 |
|
7.356339 |
|
|
|
2.896043 |
|
39.36572 |
|
9806 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 0.304813 |
|
|
|
1 |
|
2.242311 |
|
|
|
0.882753 |
|
11.9992 |
|
2989 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 0.135937 |
|
|
|
0.445969 |
|
1 |
|
|
|
|
0.39368 |
|
5.351265 |
|
1333 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 0.345299 |
|
|
|
1.13282 |
|
2.540135 |
|
|
|
1 |
|
|
13.59293 |
|
3386 |
|
|
|
|
| 0.025403 |
|
|
|
0.083339 |
|
0.186872 |
|
|
|
0.073568 |
|
1 |
|
|
249.1 |
|
|
|
|
| 0.000102 |
|
|
|
0.000335 |
|
0.00075 |
|
|
|
0.000295 |
|
0.004014 |
|
1 |
|
|
|
|
Table 12: Speed Units
| Meter/second |
Meter/minute |
Kilometer/hour |
Foot/second |
Foot/minute |
Miles/hour |
|
|
|
|
|
|
| m/s |
m/min |
km/h |
ft/s |
ft/min |
mi/h |
|
|
|
|
|
|
| 1 |
59.988 |
3.599712 |
3.28084 |
196.8504 |
2.237136 |
|
|
|
|
|
|
| 0.01667 |
1 |
0.060007 |
0.054692 |
3.281496 |
0.037293 |
|
|
|
|
|
|
| 0.2778 |
16.66467 |
1 |
0.911417 |
54.68504 |
0.621477 |
|
|
|
|
|
|
| 0.3048 |
18.28434 |
1.097192 |
1 |
60 |
0.681879 |
|
|
|
|
|
|
| 0.00508 |
0.304739 |
0.018287 |
0.016667 |
1 |
0.011365 |
|
|
|
|
|
|
| 0.447 |
26.81464 |
1.609071 |
1.466535 |
87.99213 |
1 |
|
|
|
|
|
|
Table 13: Torque Units
| Newton meter |
Kilogram force meter |
Foot pound |
Inch pound |
|
|
|
|
| Nm |
kgfm |
ftlb |
inlb |
|
|
|
|
| 1 |
0.101972 |
0.737561 |
8.850732 |
| 9.80665 |
1 |
7.233003 |
86.79603 |
| 1.35582 |
0.138255 |
1 |
12 |
| 0.112985 |
0.011521 |
0.083333 |
1 |
Table 14: Dynamic Viscosity Units
| Centipoise* |
|
Poise |
|
Pound/foot·second |
|
|
|
|
|
|
|
|
|
|
|
|
| cp |
|
poise |
|
|
|
lb/(ft·s) |
|
|
|
|
|
|
|
|
|
|
|
|
| 1 |
|
|
0.01 |
|
|
|
|
0.000672 |
|
| 100 |
|
|
1 |
|
|
|
|
0.067197 |
|
| 1488.16 |
|
|
14.8816 |
|
|
|
1 |
|
Table 15: Kinematic Viscosity Units
|
|
|
|
|
|
| Centistoke* |
|
Stoke |
|
Foot square/second |
|
meter |
|
|
|
|
square/second |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| cs |
|
St |
|
|
|
ft2/s |
|
m2/s |
|
| 1 |
|
0.01 |
|
|
|
0.000011 |
|
0.000001 |
|
| 100 |
|
1 |
|
|
|
0.001076 |
|
0.0001 |
|
| 92903 |
|
929.03 |
|
|
|
1 |
|
|
0.092903 |
|
| 1000000 |
|
10000 |
|
|
|
10.76392 |
|
1 |
|
| *note: centistokes |
x specific gravity = centipoise |
|
|
| Table 16: Temperature Conversion Formulas |
|
|
|
|
|
|
|
|
|
|
| Degree Celsius (°C) |
|
|
|
|
(°F – 32) x 5/9 |
|
|
|
|
|
|
|
|
(K – 273.15) |
|
|
| Degree Fahrenheit (°F) |
|
|
|
|
(°C x 9/5) + 32 |
|
|
|
|
|
|
|
|
(1.8 x K) – 459.67 |
|
|
| Kelvin (K) |
|
|
|
|
(°C + 273.15) |
|
|
|
|
|
|
|
|
(°F + 459.67) ÷ 1.8 |
|
|
| |
|
|
|
|
|
|
|
|
|
