MPG to L/100km Converter
Convert US miles per gallon to liters per 100 km for comparing vehicle fuel economy.
How It Works
Formula: MPG to L/100km = 235.214583 ÷ value
Example: 30 MPG = 7.840486 L/100km
Note: MPG converts to L/100km using L/100km = 235.215 ÷ MPG, based on the US gallon.
Common Uses
Rounding Rule
Rounded to 2 decimal places
Error Margin
±0.01 L/100km
Precision Guidance
For car shopping, round to 1 decimal. For detailed comparison, keep 2 decimals.
Common Mistakes
MPG and L/100km are inversely related—a higher MPG means a lower L/100km. Do not multiply directly.
Frequently Asked Questions
What is 30 MPG in L/100km?
30 MPG equals 7.84 L/100km using the formula L/100km = 235.215 ÷ MPG.
How do I convert MPG to L/100km?
Divide 235.215 by the MPG value. For example, 235.215 ÷ 30 = 7.84 L/100km.
Why is the relationship inverse?
Higher MPG is better (more efficient), but lower L/100km is better. The two scales move in opposite directions.
Is this the US gallon?
Yes, this uses the US gallon (3.785 L). The UK imperial gallon gives different results.
Deep Dive Guide
MPG to L/100km: Convert US Fuel Economy to European Ratings
Convert MPG to L/100km with the exact inverse formula (235.215 / MPG). Compare US fuel economy with European ratings for cars, rentals, and reviews.
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Last Updated 2026 | This converter was reviewed for accuracy