8.3. Measure equivalence tables for American and metric systems
The following conversion factors have been used in accordance with the current international standards.
A. From metric to American system
1. Length
1 mm = 0.1 cm = 0.0394 in
1 m = 3.2808 ft
1 km = 0.621 mi
2. Displacement
1 cm
= 0.061 cu. in
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3. Speed
1 km/h = 0.621 mph
4. Weight
1 kg = 2.2046 lb
5. Capacity
1 lt = 0.264 U.S. gal
6. Temperature
t (°C) = 0.556 • ( T (°F) – 32 )
7. Pressure
1 bar = 14.504 p.s.i.
8. Torque
1 Nm = 0.102 kgm = 0.738 ft lb
9. Power
1 kW = 1.3596 HP
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TECHNICAL INFORMATION
B. From American to metric system
1. Length
2. Displacement
3. Speed
4. Weight
5. Capacity
6. Temperature
7. Pressure
8. Torque
9. Power
- 199 -
1 in = 25,4 mm = 2,54 cm
1 ft = 30.48 cm = 0.3048 m
1 mi = 1.609 km
1 cu. in = 16.387 cm
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1 mph = 1.609 km/h
1 lb = 0.454 kg
1 U.S. gal = 3.785 lt
T (°F) = 1.8 • t (°C) + 32
1 p.s.i. = 0.06894 bar
1 ft lb = 1.3558 Nm = 0.138 kgm
1 HP = 0.7355 kW
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