# Formulas that may be of use – Gillette Generators SPMD-2500 THRU SPMD-4000 User Manual

## Page 26

PAGE 26

FORMULAS THAT MAY BE OF USE

TEMPERATURE

ºC = (ºF – 32) x 0.55555

ºF = (ºC X 1.8) + 32

VELOCITY

ft/sec x 0.3048 = m/sec

m/sec x 3.2808 = ft/sec

miles/hr x 1.6093 = km/hr

km/hr x 0.6214 = miles/hr

miles/hr x 0.44704 = m/sec

m/sec x 3.2808 = ft/sec

VOLUME

inches

3

x 16.388 = mm

3

cc

3

x 0.06102 = inches

3

feet

3

x 0.0283 = m

3

m

3

x 35.315 = feet

3

gallons x 3.785 = liter

liter x 0.2642 = gallon

gallons x 0.13337 = ft

3

PRESSURE

pounds/ft

2

x 0.006944 = pounds/in

2

pounds/in

2

x 144 = pounds/ft

2

psi x 6.8948 = kPa

kPa x 0.1450 = psi

psi = 0.4912 inches Hg

kPa = 0.1333 x inches Hg

MISCELLANEOUS

Watt x 0.00134 = hp

Watts x 3.4122 = BTU/hr

BTU/hr x 0.293 = Watts

hp x 2545.177 = BTU/hr

BTU/hr x 0.0003929 = hp

AREA

inches

2

x 6.451 = cm

2

cm

2

x 0.394 = inches

2

feet

2

x 0.0929 = m

2

m

2

x 10.764 = feet

2

TORQUE

oz-in x 0.007062 = Nm

Nm x 141.6029 = oz-in

lb-in x 0.11296 = Nm

Nm x 8.8495 = lb-in

lb-ft x 1.356 = Nm

Nm x 0.7376 = lb-ft

SINGLE PHASE ELECTRIC

Single Phase Power Factor is typically 1.0

1 kW = 1 kilo Watt = 1,000 Watts

Watts = Volts x Amps x Power Factor

Amps =

Watts______

Volts x Power Factor

THREE PHASE ELECTRIC

Three Phase Power Factor is typically 0.8

1 kW = 1 kilo Watt = 1,000 Watts

Watts = (Volts x Amps x Power Factor) x 1.732

Amps =

___ Watts__________

Volts x Power Factor x 1.732