Thermo Unit Conversions

1 kg

2.2046 lb

1 slug

32.174 lbm

1 in

2.54 cm

1 m

3.2808 ft

1 mile

1.6093 km

1 L

10^-3 m³ = 0.0353 ft^3

1 gal

0.13368 ft³

1 N

1 kg m/s²

1 lbf

32.174 lbm ft/s² = 4.4482 N

1 Pa

1 N/m² = 1.4504x10^-4 lbf/in²

1 bar

10⁵ Pa = 10² kPa = 0.1 MPa

1 lbf/in²

6894.8 Pa

1 J

1 N m = 0.73756 ft lbf

1 kJ

737.56 ft lbf

1 Btu

778.17 ft lbf = 1.0551 kJ

1 kcal

4.1868 kJ

1 W

1 J/s = 3.413 Btu/h

1 kW

1.341 hp

1 hp

746 W

1 hp

2545 Btu/h = 550 ft lbf/s

R (universal gas constant)

8.314 kJ/kmol K
1545 ft lbf/lbmol °R (Rankine)
1.986 Btu/lbmol °R

g (standard acceleration of gravity)

9.81 m/s² = 32.174 ft/s²

atm (Standard Atmospheric Pressure)

1.01325 bar or kPa
101325 Pa
14.696 lbf/in²
760 mm Hg = 1 Torr

Stefan-Boltzmann Constant

5.67x10^-8 W/m² K⁴
0.1714x10^-8 Btu/h ft² °R⁴

Unit for heat transfer coefficient and thermal conductivity

W/m² and W/m*K

1 ton (refrigeration capacity)

200 Btu/min = 211 kJ/min

1 Dyne

10^-5 N

1 stoke

1 cm²/sec = 0.0001 m²/sec

1 poise

1 dyne*sec/cm² = 0.1 Pa*sec