Appendix 3
Conversion of Units
| Length | 1 meter (m) = 39.37 inches = 3.28 feet (ft) |
| 1 centimeter (cm) = 10–2 m | |
| 1 millimeter (mm) = 10–3 m | |
| 1 micrometer (μm) = 10–6 m | |
| 1 kilometer (km) = 0.6212 mile (mi) = 3280 feet (ft) | |
| Area | 1 square meter (m2) = 10.76 ft2 |
| Volume | 1 cubic meter (m3) = 35.29 ft3 |
| 1 liter (l) = 1000 cm3 | |
| Temperature | degree Celsius, °C = (5/9)  [degree Fahrenheit (°F) – 32] |
| K = °C + 273 | |
| Force | 1 N = 0.2252 pound force (lbf) = 1 kg-m/s2 |
| Weight | 1 kilogram force (kgf) = 2.2 lbf |
| Pressure and stress | 1 MPa = 145.05 pound per square inch (psi) |
| 1 Pa = 1 N/m2 = 10 dynes/cm2 = 2.089 × 10–2 lbf/ft2 | |
| Mass | 1 g = 68.5 × 10–6 slug |
| 1 kg = 1000 g = 2.2 pounds mass (lbm) | |
| Energy | 1 J = 0.2389 calories (cal) = 107 ergs = |
| 0.7376 ft-lbf = 9.481 × 10–4 Btu | |
| 1 kilowatt-hour (kW-h) = 3.6 × 106 J = 3413 Btu | |
| Power | 1000 watts (W) = 1.341 horsepower (hp) = |
| 737.6 ft-lbf/s = 0.9483 Btu/s | |
| 1 W = 1 J/s | |
| Velocity | 1 m/s = 3.28 ft/s |
| 1 km/h = 0.6212 miles/h = 0.9111 ft/s | |
| Specific heat | 1 J/g-°C = 0.2394 Btu/lbm-°F |
| Thermal conductivity | 1 W/m-°C = 13.3816 × 10–6 Btu/in-s-°F |
| Heat transfer coefficient | 1 W/m2-°C = 1.1151 × 10–6 Btu/in2-s-°F |
| Thermal diffusivity | 1 m2/s = 1545 in2/s |
| Coefficient of linear thermal expansion | /°C = 0.5555/°F |
| Dynamic viscosity | N-s/m2 = 10 poise = 0.02089 slug/ft-s |
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