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Fuel Economy Converter (MPG to L/100km)

While the US and UK measure vehicle efficiency in distance-per-fuel (Miles per Gallon), mainland Europe and Canada express fuel consumption in fuel-per-distance (Liters per 100 km).

Fuel rating to convert.

Direction of conversion.

Calculated Result
7.8 L/100km

Converted Fuel Economy

Liters per 100 km

7.8 L/100km

Miles per Gallon (US)

30 MPG

Miles per Gallon (UK)

36 MPG UK

Kilometers per Liter

12.8 km/L

Calculation Breakdown

  1. Reciprocal Fuel FormulaL/100km = 235.2145 ÷ 30 MPG = 7.8 L/100km.
  2. UK Imperial & Metric Efficiency30 US MPG = 36 Imperial MPG = 12.8 km/liter.

Fuel Economy Equivalents (US MPG vs L/100km)

Interactive visualization based on your current inputs

L/100km
0.02.95.98.81220 MPG30 MPG40 MPG50 MPGUS MPGLiters per 100 km

What Is the Fuel Economy Converter (MPG to L/100km)?

A fuel economy converter translates vehicle efficiency figures between distance-based and volumetric consumption conventions.

How Does the Fuel Economy Converter (MPG to L/100km) Work?

Evaluates the reciprocal mathematical constant 235.215 derived from (100 × 3.785411784) / 1.609344.

Fuel Economy Converter (MPG to L/100km) Formula & Variables

The core mathematical equation utilized by this calculator is expressed as:

L/100km = 235.215 ÷ US MPG · US MPG = 235.215 ÷ L/100km

Uses the constant 235.214583 to account for mile-to-km and US gallon-to-liter reciprocal relationships.

How to Use the Fuel Economy Converter (MPG to L/100km)

  1. Input your vehicle rating and select the conversion direction.

Step-by-Step Example Calculation

30 US MPG to L/100km

Input Values:

value:30
direction:mpg_to_l100km

Understanding Your Result

Shows L/100km, US MPG, UK Imperial MPG, and kilometers per liter.

Factors That Affect the Result

  • Driving conditions, vehicle payload, and aerodynamics.

When Should You Use This Calculator?

  • Comparing international vehicle specs, calculating road trip fuel budgets abroad, and car shopping.

Assumptions & Limitations

  • Applies to standard liquid petroleum fuels.

Frequently Asked Questions

Calculation Accuracy & Reference Note

Standard international automotive engineering constant 235.214583.

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