Fuel Economy Converter
Convert fuel economy across 7 supported units with free instant calculations, formula guidance and examples. No sign-up required.
Calculations run in your browser. Results use approximately 12 significant digits, with floating-point rounding. Verify safety-critical measurements against applicable standards.
About Fuel Economy conversion
Convert between 7 fuel economy units, including km/L, mpg US, mpg imperial, mi/L, L/100 km. Results update immediately when you edit the number or select another unit.
Fuel consumption such as liters per 100 km uses the reciprocal of fuel economy. Values must be positive.
Example calculation
1 km/L = 2.3521458333 mpg US. This category requires a scale-specific equation rather than a single universal multiplier.
How to use
- Enter your amount in the field above.
- Select the original and destination fuel economy units.
- Copy the calculated result or swap the units to reverse the conversion.
Frequently asked questions
Can I convert fuel economy units for free?
Yes, the calculation runs locally in your browser with no sign-up.
Which units are supported?
This category currently includes 7 entries. Select the units from the dropdowns above.
Are the results suitable for professional use?
Fuel consumption such as liters per 100 km uses the reciprocal of fuel economy. Values must be positive. Check critical work against an applicable standard.
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Unit definition reference: NIST Guide to the SI.