文档介绍：CONVERSION FACTORS FROM ENGLISH TO SI UNITS
Length: 1 ft ϭ m Coefficient of 1 ϭ cm2/sec
1 ft ϭ cm consolidation: 1 ϭ ϫ 103 m2/yr
1 ft ϭ mm 1 ft2/sec ϭ cm2/sec
1 in. ϭ m
Force: 1 lb ϭ N
1 in. ϭ cm Ϫ
1 lb ϭ ϫ 10 3 kN
1 in. ϭ mm
1 lb ϭ kgf
Area: 1 ft2 ϭ ϫ 10Ϫ4 m2 1 kip ϭ kN
1 ft2 ϭ cm2 1 . ton ϭ kN
1 ft2 ϭ ϫ 102 mm2 1 lb ϭ ϫ 10Ϫ3 metric ton
1 ϭ ϫ 10Ϫ4 m2 1 lb/ft ϭ N/m
1 ϭ cm2
Stress: 1 lb/ft2 ϭ N/m2
1 ϭ mm2
1 lb/ft2 ϭ kN/m2
Volume: 1 ft3 ϭ ϫ 10Ϫ3 m3 1 . ton/ft2 ϭ kN/m2
1 ft3 ϭ ϫ 103 cm3 1 kip/ft2 ϭ kN/m2
1 ϭ ϫ 10Ϫ6 m3 1 lb/ ϭ kN/m2
1 ϭ cm3
Unit weight: 1 lb/ft3 ϭ kN/m3
Section 1 ϭ ϫ 105 mm3 1 lb/ ϭ kN/m3
modulus: 1 ϭ ϫ 10Ϫ4 m3
Moment: 1 lb-ft ϭ N · m
Hydraulic 1 ft/min ϭ m/min 1 lb-in. ϭ N · m
conductivity: 1 ft/min ϭ cm/min
Energy: 1 ft-lb ϭ J
1 ft/min ϭ mm/min
1 ft/sec ϭ m/sec Moment of 1 ϭ ϫ 106 mm4
1 ft/sec ϭ mm/sec inertia: 1 ϭ ϫ 10Ϫ6 m4
1 in./min ϭ m/min
1 in./sec ϭ cm/sec
1 in./sec ϭ mm/sec
CONVERSION FACTORS FROM SI TO ENGLISH UNITS
Length: 1 m ϭ ft Stress: 1 N/m2 ϭ ϫ 10Ϫ3 lb/ft2
1 cm ϭ ϫ 10Ϫ2 ft 1 kN/m2 ϭ lb/ft2
1 mm ϭ ϫ 10Ϫ3 ft 1 kN/m2 ϭ . ton/ft2
1 m ϭ in. 1 kN/m2 ϭ ϫ 10Ϫ3 kip/ft2
1 cm ϭ in. 1 kN/m2 ϭ lb/
1 mm ϭ in.
Unit weight: 1 kN/m3 ϭ lb/ft3
Area: 1 m2 ϭ ft2 1 kN/m3 ϭ lb/
1 cm2 ϭ ϫ 10Ϫ4 ft2
Ϫ Moment: 1 N · m ϭ lb-ft
1 mm2 ϭ ϫ 10 6 ft2
1 N · m ϭ lb-in.
1 m2 ϭ 1550
1 cm2 ϭ Energy: 1 J ϭ ft-lb
2 Ϫ2 2
1 mm ϭ ϫ 10 in. Ϫ
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