Online calculator to convert Imperial mpg to US mpg with conversion tables. Our conversions provide a quick and easy way to convert between Fuel Economy (Fuel Consumption) units.
Conversion Calculator
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Convert Imperial mpg to US mpg
Conversion Definitions
The following is a list of definitions relating to conversions between Imperial mpg and US mpg.
What is Imperial miles per gallon (Imperial mpg)?
Imperial miles per gallon is a unit of fuel economy in the Imperial System. Imperial miles per gallon is calculated as the number of miles traveled per Imperial gallon (not to be confused with US gallon). The symbol for Imperial miles per gallon is Imperial mpg.
What is US miles per gallon (US mpg)?
US miles per gallon is a unit of fuel economy in US Customary Units. US miles per gallon is calculated as the number of miles traveled per US gallon (not to be confused with Imperial gallon). The symbol for US miles per gallon is US mpg.
Conversion Table
For quick reference purposes, below is a conversion table that you can use to convert from Imperial mpg to US mpg.
Imperial mpg to US mpg Conversion Chart
| Imperial mpg | US mpg |
|---|---|
| 1 Imperial mpg | 0.83267384 US mpg |
| 2 Imperial mpg | 1.66534768 US mpg |
| 3 Imperial mpg | 2.49802152 US mpg |
| 4 Imperial mpg | 3.33069536 US mpg |
| 5 Imperial mpg | 4.1633692 US mpg |
| 6 Imperial mpg | 4.99604304 US mpg |
| 7 Imperial mpg | 5.82871688 US mpg |
| 8 Imperial mpg | 6.66139072 US mpg |
| 9 Imperial mpg | 7.49406456 US mpg |
| 10 Imperial mpg | 8.3267384 US mpg |
| 11 Imperial mpg | 9.15941224 US mpg |
| 12 Imperial mpg | 9.99208608 US mpg |
| 13 Imperial mpg | 10.82475992 US mpg |
| 14 Imperial mpg | 11.65743376 US mpg |
| 15 Imperial mpg | 12.4901076 US mpg |
| 20 Imperial mpg | 16.6534768 US mpg |
| 25 Imperial mpg | 20.816846 US mpg |
| 30 Imperial mpg | 24.9802152 US mpg |
| 35 Imperial mpg | 29.1435844 US mpg |
| 45 Imperial mpg | 37.4703228 US mpg |
| 50 Imperial mpg | 41.633692 US mpg |
Related Units
This table provides a summary of the Fuel Economy units within their respective measurement systems.
| Unit | Symbol | Measurement System |
|---|---|---|
| US miles per gallon | US mpg | US Customary Units |
| Imperial miles per gallon | Imperial mpg | Imperial System |
| Litres per 100 kilometers | L/100km | Metric System |
Note: There is a difference between US Customary Units and the Imperial System when it comes to some Fuel Economy conversions. The US gallon contains 128 US fl oz, while the Imperial gallon contains 160 Imp fl oz. So make sure you are converting using the correct system of measurement.
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