Unit Conversion Online Calculator



Pressure

Input Value:

Pressure [atm]

Output Value:

Pressure [psi]


Pressure

Input Value:

Pressure [psi]

Output Value:

Pressure [atm]


Temperature

Input Value:

Temperature [K]

Output Value:

Temperature [F]


Temperature

Input Value:

Temperature [F]

Output Value:

Temperature [K]


Length

Input Value:

Length [m]

Output Value:

Length [ft]


Length

Input Value:

Length [ft]

Output Value:

Length [m]


Volume

Input Value:

Volume [m^3]

Output Value:

Volume [ft^3]


Volume

Input Value:

Volume [ft^3]

Output Value:

Volume [m^3]


Density

Input Value:

Density [kg/m^3]

Output Value:

Density [lbm/ft^3]


Density

Input Value:

Density [lbm/ft^3]

Output Value:

Density [kg/m^3]


Mass

Input Value:

Mass [kg]

Output Value:

Mass [lbm]


Mass

Input Value:

Mass [lbm]

Output Value:

Mass [kg]


Velocity

Input Value:

Velocity [m/s]

Output Value:

Velocity [ft/s]


Velocity

Input Value:

Velocity [ft/s]

Output Value:

Velocity [m/s]


Force

Input Value:

Force [N]

Output Value:

Force [lbf]


Force

Input Value:

Force [lbf]

Output Value:

Force [N]


Energy, Work and Heat

Input Value:

Energy [J]

Output Value:

Energy [Btu]


Energy, Work and Heat

Input Value:

Energy [Btu]

Output Value:

Energy [J]


Specific Energy and Work

Input Value:

Specific Energy ... [J/kg]

Output Value:

Specific Energy ... [Btu/lbm]


Specific Energy and Work

Input Value:

Specific Energy ... [Btu/lbm]

Output Value:

Specific Energy ... [J/kg]


Power

Input Value:

Power [kW]

Output Value:

Power [HP]


Power

Input Value:

Power [HP]

Output Value:

Power [kW]


Specific Entropy, Specific Heat and Gas Constant

Input Value:

Specific Entropy ... [J/kg*K]

Output Value:

Specific Entropy ... [Btu/lbm*R]


Specific Entropy, Specific Heat and Gas Constant

Input Value:

Specific Entropy ... [Btu/lbm*R]

Output Value:

Specific Entropy ... [J/kg*K]


Gas

Gas

Kappa
[/]

Gas Constant
[J/kg*K]

Specific Heat
[J/kg*K]

Air

 

1.4

286.7

1,004

Ammonia

NH3

1.3

488.2

2,092

Argon

Ar

1.67

208.1

519

Carbon Dioxide

CO2

1.28

188.9

845

Carbon Monoxide

CO

1.4

296.8

1,042

Helium

He

1.66

2,078.5

5,200

Hydrogen

H2

1.4

4,124

14,350

Methane

CH4

1.32

518.2

2,223

Nitrogen

N2

1.4

296.9

1,038

Oxygen

O2

1.4

259.8

916

Water Vapor

H2O

1.33

188.5

1,690


Here are some of the frequently used energy conversion factors when dealing with engineering calculations related to energy conversion systems:

Mass

1 kg = 2.2046 lbm
1 lbm = 0.4536 kg

Density

1 kg/m^3 = 0.06243 lbm/ft^3
1 lbm/ft^3 = 16.02 kg/m^3

Force

1 N = 0.2248 lbf
1 lbf = 4.448 N

Length

1 m = 3.2810 ft
1 ft = 0.3048 m

Temperature

F = C * 1.8 + 32
F = R - 460
C = (F - 32) / 1.8
C = K - 273

Pressure

1 atm = 14.696 psi
1 psi = 0.068 atm

Volume

1 m^3 = 35.32 ft^3
1 ft^3 = 0.0283 m^3

Energy, Work, Heat

1 kJ = 0.948 Btu
1 Btu = 1.055 kJ
1 Btu = 778 lbf*ft
1 kWhr = 3,412 Btu

Power

1 kW = 56.91 Btu/min
1 Btu/min = 778 lbf*ft/min
1 kW = 1.341 HP
1 HP = 550 lbf*ft/s


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