SuperCalX

Fuel Economy Converter

Convert between MPG (US/UK), L/100km, and km/L.
Calculator
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Analysis
Interpretation of the current calculator output

Enter values to see detailed analysis and insights.

How to Use

Step-by-step instructions
  1. 1Enter the fuel economy value
  2. 2Select the source unit (e.g., MPG)
  3. 3Select the target unit (e.g., L/100km)
  4. 4View the converted efficiency

Conversion Formulas

Fuel economy units are inversely related (Consumption vs Efficiency).
L/100km = 235.215 / MPG (US)

Variables:

235.215Conversion constant for US Gallons to Liters and Miles to km

Example

MPG to L/100km

Inputs:

Value:30
From:MPG (US)
To:L/100km

Steps:

  1. 1.L/100km = 235.215 / 30
  2. 2.Result = 7.84 L/100km
Result:
7.84 L/100km

Frequently Asked Questions

Why is L/100km different?

L/100km measures consumption (lower is better), while MPG and km/L measure efficiency (higher is better).

Difference between US and UK MPG?

The UK Gallon (Imperial) is larger than the US Gallon (approx 4.54L vs 3.785L), so UK MPG values are higher for the same efficiency.