Miles Per Gallon (US) to Liters Per 100 Km Converter

Conversion Updated 15 Jun 2026

This Miles Per Gallon (US) to Liters Per 100 Km Converter lets you convert Miles per gallon (US) (mpg-US) into Liters per 100 km (L/100km) in one step. Enter a value in miles per gallon (us) and you'll instantly see the equivalent in liters per 100 km, worked out with the formula L/100km = 235.214583 / mpg-US. It's handy whenever you need a quick, precise miles per gallon (us)-to-liters per 100 km conversion without doing the arithmetic by hand.

  • Conversion constants are fixed and do not vary by region.

Formula

L/100km = 235.214583 / mpg-US
  • This conversion uses the formula L/100km = 235.214583 / mpg-US, which includes an offset — it is not a single multiply-by factor.
  • Apply the whole formula (scaling and the constant term) to each value you convert.
  • Displayed results are rounded for readability, but the full-precision value is used in the calculation.

Example

Inputs
  • Miles per gallon (US) (mpg-US): 30

Apply L/100km = 235.214583 / mpg-US: 30 mpg-US converts to 7.8404861 L/100km.

Frequently asked questions

How do I convert miles per gallon (us) to liters per 100 km?
Apply the formula L/100km = 235.214583 / mpg-US. For example, 30 mpg-US equals 7.8404861 L/100km.
Is this conversion accurate?
Yes. The calculator uses the exact, internationally accepted relationship between the two units.
Why can tiny differences appear after conversion?
Very small differences are only a display effect from rounding the output. The underlying calculation keeps full precision.