21. ANNEX

Convert from

To

Multiply by

mm

in

0.0394

mm

ft

0.00328

Table 21.3 Pressure conversion factors

Convert from

To

Multiply by

kPa

psi (lbf/in2)

0.145

kPa

lbf/ft2

20.885

kPa

inch H2O

4.015

kPa

foot H2O

0.335

kPa

mm H2O

101.972

Table 21.5 Power conversion factors

Convert from

To

Multiply by

kW

hp (metric)

1.360

kW

US hp

1.341

Table 21.7 Fuel consumption conversion factors

Convert from

To

Multiply by

g/kWh

g/hph

0.736

g/kWh

lb/hph

0.00162

Table 21.9 Temperature conversion factors

Convert from

To

Calculate

°C

F

F = 9/5 *C + 32

°C

K

K = C + 273.15

Convert from

To

Multiply by

kg

lb

2.205

kg

oz

35.274

Table 21.4 Volume conversion factors

Convert from

To

Multiply by

m3

in3

61023.744

m3

ft3

35.315

m3

Imperial gallon

219.969

m3

US gallon

264.172

m3

l (litre)

1000

Table 21.6 Moment of inertia and torque conversion factors

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To

Multiply by

kgm2

lbft2

23.730

kNm

lbf ft

737.562

Table 21.8 Flow conversion factors

Convert from

To

Multiply by

m3/h (liquid)

US gallon/min

4.403

m3/h (gas)

ft3/min

0.586

Table 21.10 Density conversion factors

Convert from

To

Multiply by

kg/m3

lb/US gallon

0.00834

kg/m3

lb/Imperial gallon

0.01002

kg/m3

lb/ft3

0.0624