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

Conversion Updated 15 Jun 2026

This Liters Per 100 Km to Miles Per Gallon (UK) Converter lets you convert Liters per 100 km (L/100km) into Miles per gallon (UK) (mpg-UK) in one step. Enter a value in liters per 100 km and you'll instantly see the equivalent in miles per gallon (uk), worked out with the formula mpg-UK = 282.480936 / L/100km. It's handy whenever you need a quick, precise liters per 100 km-to-miles per gallon (uk) conversion without doing the arithmetic by hand.

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

Formula

mpg-UK = 282.480936 / L/100km
  • This conversion uses the formula mpg-UK = 282.480936 / L/100km, 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
  • Liters per 100 km (L/100km): 7

Apply mpg-UK = 282.480936 / L/100km: 7 L/100km converts to 40.354419428571 mpg-UK.

Frequently asked questions

How do I convert liters per 100 km to miles per gallon (uk)?
Apply the formula mpg-UK = 282.480936 / L/100km. For example, 7 L/100km equals 40.354419428571 mpg-UK.
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.