Conversion and Constants

1 ft³ to inch³

1728 in³

1 ft³ to gallons

7.482 gal

1 m³ to liters

1000 liters

1 gal to liters

3.785 liters

1 m³ to ft³

35.31 ft³

1 statute mile to ft

5280 feet

1 statute mile to yards

1760 yards

1 span to inch

9 inches

1 nautical mile to statute mile

1.152 statute mile

1 fathom to ft

6 ft

1 yard to ft

3 ft

1 m to ft

3.2808 ft

1 rope to ft

20 ft

1 meter to in

39.37 inches

1 furlong to rods

40 rods

1 furlong to yards

220 yards

1 cable length to ft

720 ft

1 mile to km

1.609 km

1 rod to yards

5.5 yd

1 rod to ft

16.5 ft

1 inch to mm

25.4 mm

1 vara to in

33.33 in

1 chain to ft

66 ft

1 HP to BTU/hr

2545 BTU/hr

1 HP to lbf-ft/s

550 lbf-ft/s

1 HP to kW

0.746 kW

1 MHP to kW

0.736 kW

1 HP to MHP

1.1014 MHP

1 Boiler HP to BTU/hr

33480 BTU/hr

1 Boiler HP to KJ/hr

35322 KJ/hr

1 HP to Watts

746 Watts

1 HP to lbf-ft/min

33000 lbf-ft/min

1 kW to BTU/hr

3414 BTU/hr

1 kW to KJ/hr

3600 KJ/hr

1 PS (MHp) to watts

735.5 Watts

1 BTU to KJ

1.055 KJ

1 BTU to lbf-ft

778.16 lbf-ft

1 BTU to kcal

0.252 kcal

1 cal to J

4.187 J

1 kcal to BTU

3.9657 BTU

1 erg to dyne-cm

1 dyne-cm

1 erg to J

10^-7 J

1 BTU/lb to kJ/kg

2.326 kJ/kg

1 watt-sec to erg

10^7 ergs

1 atm to psi

14.696 psi

1 atm to mH2O

10.33 mH2O

1 atm to kPa

101.325 kPa

1 atm to inHg

29.92 inHg

1 atm to bar

1.013 bar

1 atm to mmHg

760 mmHg

1 atm to torr

760 torr

1 atm to kgf/cm²

1.033 kgf/cm²

1 bar to kPa

100 kPa

1 torr to pascal

133.32 pascal

1 kg/cm² to psi

14.22 psi

1 ft² to in²

144 in²

1 m² to cm²

10 000 cm²

1 m² to ft²

10.76 ft²

1 hectare to m²

10 000 m²

1 hectare to yards²

11 959. 6096 yards²

1 acre to m²

4046.856 m²

1 short ton to lbm

2000 lbm

1 long ton to lbm

2240 lbm

1 metric ton to kgm

1000 kgm

1 metric ton to lbm

2204.6225 lbm

1 kgm to lbm

2.2046 lbm

1 stonne to lbm

14 lbm

1 slug to lbm

32.174 lbm

1 lbm to grains

7000 grains

1 quintal to kgm

100 kgm

density of water, SI

1000 kg/m³

density of water, English Units

62.4 lbm/ft³

specific weight of water, SI

9.8066 KN/m³

specific weight of water, English Units

62.4 lbf/ft³

Cp of Water, SI

4.187 KJ/kgm-K

Cv of Water, SI

4.187 KJ/kgm-K

Cp of Water, english units

1.0 BTU/lbm-R

Cv of Water, english units

1.0 BTU/lbm-R

Latent Heat of Fusion, SI

335 kJ/kg

Latent Heat of Fusion, english units

144 BTU/lbm

Latent Heat of Vaporization, SI

2257 kJ/kg 

Latent Heat of Vaporization, english units

970.3 BTU/lbm

Cp of Air, SI

1.0062 kJ/kg-K

Cp of Air, english units

0.24 BTU/lbm-R

Cv of Air, SI

0.7186 kJ/kg-K

Cv of Air, english units

0.1714 BTU/lbm-R

density of air, SI

1.2 kg/m³

density of air, english units

0.075 lbm/ft³

k of air (cold)

1.4

k of air (hot)

1.3

MW of air

28.97 kgm/kgmol

R of air, SI

0.28708 kJ/kg-K

R of air, english units

53.342 lbf-ft/lbm-R

universal gas constant, SI

8.3143 J/mol-K

universal gas constant, english units

1545 lbf-ft/lbmol-R

Cp of steam, SI

2.01 kJ/kg-K

Cp of steam, english units

0.48 BTU/lbm-R

Cp of ice, SI

2.09 kJ/kgm-K

Cp of Ice, english

0.5 BTU/lbm-R

SG of seawater

1.03