Appendix: Units Multimedia Engineering Thermodynamics US_to_SI SI_to_US
 Chapter 1. Basics 2. Pure Substances 3. First Law 4. Energy Analysis 5. Second Law 6. Entropy 7. Exergy Analysis 8. Gas Power Cyc 9. Brayton Cycle 10. Rankine Cycle Appendix Basic Math Units Thermo Tables Search eBooks Dynamics Statics Mechanics Fluids Thermodynamics Math Author(s): Meirong Huang Kurt Gramoll ©Kurt Gramoll

 SI to US Area 1 mm2 = 0.001550 in2 1 m2 = 10.76 ft2 = 1550 in2 Acceleration 1 m/s2 = 3.281 ft/s2 = 39.37 in/s2 1 g = 32.17 ft/s2 = 9.807 m/s2   (average at earth's surface) Mass 1 kg = 0.0685 slug 1 t (metric tonne) = 1,000 kg = 68.5 slug Force 1 N = 0.2248 lb 1 kN = 0.2248 kip = 224.8 lb Power 1 W = 1 N-m/s = 0.7376 ft-lb/s 1 W = 0.001341 hp Time 1 min = 60 s 1 hr = 60 min = 3,600 s 1 day = 24 hr = 86,400 s Density 1 kg/m3 = 0.001940 slug/ft3 Temperature TC = (5/9) (TF - 32) TK = TC + 273.15 (Kelvin) Pressure 1 Pa = 1 N/m2 = 0.0209 lb/ft2 = 1.45×10-4 psi 1 bar = 100,000 Pa 1 MPa = 1,000 kPa = 0.1450 ksi 1 GPa = 1,000 MPa = 0.1450 msi 1 atm = 101.3 kPa = 760 mmHg Length 1 m = 3.281 ft = 39.37 in. 1 km = 0.6214 mi Volume 1 mm3 = 6.102×10-5 in3 = 3.531×10-8 ft3 1 m3 = 6.102×104 in3 = 35.31 ft3 1 liter = 0.2642 gal 1,000 liter = 1 m3 Velocity 1 m/hr = 3.281 ft/hr 1 km/hr = 0.2778 m/s = 0.6214 mi/hr = 0.9113 ft/s Work/Energy 1 J = 1 N-m = 0.7376 ft-lb Angle 1 rad = 180/π deg = 57.30 deg 1 deg = π/180 rad = 0.01745 rad 1 rev = 2π rad = 360 deg 1 rev/min (rpm) = 0.1047 rad/s