기계공학용 책 Advanced.Engineering.Mathematics.10th.Edition.BD 솔루션

Systems of Units. Some Important Conversion Factors
The most important systems of units are shown in the table below. The mks system is also known as the International System of Units (abbreviated SI), and the abbreviations sec (instead of s), gm (instead of g), and nt (instead of N) are also used.
System of units cgs system mks system Engineering system
Length centimeter (cm) meter (m) foot (ft)
Mass gram (g) kilogram (kg) slug
Time second (s) second (s) second (s)
Force dyne newton (nt) pound (lb)

1 inch (in.) 1 yard (yd)

2.540000 cm 3 ft 91.440000 cm 6080 ft 1.853184 km

1 foot (ft)
12 in.
30.480000 cm 5280 ft 1.609344 km
1 statute mile (mi)
1 nautical mile 1 acre
4840 yd2
4046.8564 m2 231/128 in.3
1 mi2
640 acres
2.5899881 km2
1 fluid ounce 1 U.S. gallon
1/128 U.S. gallon 4 quarts (liq)
29.573730 cm3 3785.4118 cm3 4546.087 cm3
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