How to Convert Fuel-Consumption Units
Enter a fuel-consumption value, choose its source unit and a destination unit from the five supported choices, then run the conversion. A successful result is a numeric value rounded to 10 decimal places.
What the Fuel Converter does
The Fuel Converter changes a fuel-consumption number between five supported unit types: US miles per gallon, UK miles per gallon, liters per 100 kilometers, kilometers per liter, and miles per liter. It is useful when a vehicle specification, trip record, or comparison uses a different fuel-economy unit from the one you need.
Choose the unit that describes the number you have as the source, then choose the unit you want as the destination. For example, a US miles-per-gallon value can be converted to liters per 100 kilometers. The declared input defaults are 30 for the number, US miles per gallon for the source, and liters per 100 kilometers for the destination, so those settings provide a starting point rather than a required scenario.
How to convert a fuel-consumption value
- Enter the fuel-consumption number you want to convert. If you leave the numeric input at its declared default, the starting value is 30.
- Select the source unit that matches your original number. The available choices are US miles per gallon, UK miles per gallon, liters per 100 kilometers, kilometers per liter, and miles per liter.
- Select the destination unit for the result. Confirm that both selections come from the supported choices; an unrecognized source or destination unit does not produce a successful conversion.
- Submit or run the conversion using the control provided by the tool.
- Read the converted numeric value and check that the direction is correct. For instance, converting US miles per gallon to liters per 100 kilometers is different from converting liters per 100 kilometers to US miles per gallon. A successful numeric result is rounded to 10 decimal places.
How to read the result
A successful result is a converted numeric value expressed in the destination unit you selected. The displayed number is rounded to 10 decimal places, so trailing decimal places can appear even when they are not useful for your report or comparison.
Check the source and destination labels before using the result. US miles per gallon and UK miles per gallon are separate supported unit types, and neither should be substituted for the other. Also, zero is not a universally usable input: the reviewed conversion from zero US miles per gallon to liters per 100 kilometers fails because that direction requires division. Use a nonzero value for conversions with this boundary.
Worked example
A driver has a fuel-economy figure of 30 US miles per gallon and needs the equivalent unit for a fuel-consumption comparison.
Enter 30, select US miles per gallon as the source, select liters per 100 kilometers as the destination, and run the conversion.
A successful conversion returns one numeric value in liters per 100 kilometers, rounded to 10 decimal places.
Limitations
- Zero does not produce a successful result when the selected conversion requires division; the reviewed zero US miles per gallon to liters per 100 kilometers conversion fails.
Common errors
- Selecting a unit outside the five supported choices, or entering zero for a conversion that requires division, prevents a successful result. Select a supported source and destination unit and use a nonzero value when the chosen direction has that zero-value boundary.
FAQ
Can I convert between US mpg and liters per 100 kilometers?
Yes, when the source and destination are selected from the five supported unit types and the conversion does not encounter its zero-value division boundary. Successful conversions produce a converted numeric value rounded to 10 decimal places.
What are the default fuel-conversion settings?
The declared starting value is 30, with US miles per gallon as the source and liters per 100 kilometers as the destination. You can replace the value and change either unit before running the conversion.
Which fuel-consumption units are supported?
No. The supported choices are US miles per gallon, UK miles per gallon, liters per 100 kilometers, kilometers per liter, and miles per liter. An unrecognized source or destination unit causes an unsuccessful conversion.