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Convert Imperial values to Metric
and Metric values to Imperial


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Popular Diesel Engine Specs

Fuel Consumption Conversions, Metric-Imperial; mpg, lbs/hp hour, US gal, liters per km

Basis: Specific Gravity of Diesel = 0.853 @ 15.5°C
Unit Multiply By To Get
lbs / hp hour 0.533 liter  / hour
lbs / hp hour 0.1408 US gal / hour
US gal / hour 3.7854 liter  / hour
liter  / hour 0.2642 US gal / hour
kg  / hour 1.175 liters / hour
grams  / hour 0.001175 liters / hour
liter  / kilometer 100 liters / 100 kilometers
miles  / US gallon 2.3521458 liters / kilometer
miles  / US gallon 235.21458 liters / 100 kilometers
More On: Diesel engine Fuel Consumption conversions 
Regard all values as approximate
 

Length Metric-Imperial Conversions

Basis: 1 km = 0.621371192 mile
Unit Multiply By To Get
inches 25.40 mm
mm 0.0394 inches
feet 0.3048 meters
meters 3.281 feet
km 0.612 miles
miles 1.6093 km
thou 0.0254 mm
mm 39.3701 thou

Power, Metric Units to Imperial Units

Unit Multiply By To Get
hp SAE 0.7457 kW
hp metric  0.7355 kW
kW 1.3410 hp SAE
kW 1.3596 hp metric 

Relationship between power and torque:
lb.ft = hp*5252/rpm
hp = lb.ft*rpm/5252

Nm = kW*9549/rpm
kW = Nm*rpm/9549

 

Pressure Imperial-Metric conversion table

Unit Multiply By To Get
psi 0.0689 bar
psi 6.8948 kPa
bar 14.5038 psi
kPa 0.1450 psi 
bar 100 kPa
kPa 0.01 bar
 

Torque, Imperial-Metric conversion table

Unit Multiply By To Get
lb.ft 1.3558 Nm
Nm 0.7376 lb.ft
inch pound 0.113 Nm
Nm 8.8507 inch pound 

Relationship between power and torque:
lb.ft = hp*5252/rpm
hp = lb.ft*rpm/5252

Nm = kW*9549/rpm
kW = Nm*rpm/9549

 

Volume, Imperial-Metric conversion table

Unit Multiply By To Get
inch³ 16.387 ml, cc
inch³ 0.016387 liter
ml, cc 0.061 inch³
liter 61.02374 inch³ 


 

Weight, Imperial to Metric conversion table

1 g     =   0.002204623 lb
1 lb    =   453.59237 g
1 lb	=	0.453592 kg
1 kg	=	2.20462 lb
 
 

Speed Conversion table Imperial-Metric

Image Speed Scale
Convert speed from kph to mph; mph to kph
 

Temperature - Ambient, Convert to and from Celsius and Fahrenheit

Thermometer °F to °C

Formulae
°F = (°C * 9/5) + 32
°C = (°F -32)*(5/9)

 

Temperature - Engine Related, Convert to and from Celsius and Fahrenheit

Thermometer F2C

Notes
100°C = 212°F = boiling point of water
0°C = 32°F = freezing point of water
-40°C = -40°F = point of agreement on both scales

 



Barrington Diesel Club
Phone: +27 72 754 4660
email: steve@barringtondieselclub.co.za
© copyright Steve Barrington 2016

Page Revision #12.1RS 11-17