Is Fuel Efficiency Converter free?

Yes, completely free with unlimited conversions and no registration required.

What fuel efficiency units can I convert?

You can convert between MPG (US), MPG (Imperial), L/100km, km/L, and km/gal. All five units are supported in both directions.

How do I convert MPG to L/100km?

Select 'MPG (US)' from the 'From Unit' dropdown, enter your value, choose 'L/100km' as the 'To Unit', and the conversion appears instantly. Formula: L/100km = 235.214 ÷ MPG.

What does L/100km mean?

L/100km measures liters of fuel consumed per 100 kilometers driven. It's commonly used in Europe, Asia, and Australia. Lower numbers indicate better fuel efficiency.

Does Fuel Efficiency Converter work on mobile?

Yes, it works on all devices including iPhone, Android smartphones, tablets, and desktop computers with full functionality.

Is my data safe when using Fuel Efficiency Converter?

Yes, completely safe. All conversions happen in your browser. Your numbers are never sent to servers or stored anywhere.

Can I convert decimal values like 25.5 MPG?

Yes, the converter accepts any decimal value. Enter numbers like 25.5, 10.8, or 7.25 for precise conversions.

What's the difference between MPG US and MPG Imperial?

MPG (US) uses US gallons (3.785 liters), while MPG (Imperial) uses Imperial gallons (4.546 liters). A car with 25 MPG US equals approximately 30 MPG Imperial.

How accurate is the Fuel Efficiency Converter?

The converter uses standard conversion formulas and provides results accurate to two decimal places, suitable for all practical fuel efficiency calculations.

Can I bookmark this tool?

Yes, bookmark this page in your browser for instant access to the converter anytime without searching again.

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Fuel Efficiency Converter — fast

Convert between MPG, L/100km, km/L and more.

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All fuel conversions

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MPG (UK)NaN

km/LNaN

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How to use Fuel Efficiency Converter

Select your source fuel efficiency unit

Click the dropdown menu labeled 'From Unit' at the top of the converter. Choose from MPG (US), MPG (Imperial), L/100km, km/L, or km/gal. The dropdown displays all available units with their full names.

Enter your fuel efficiency value

Type your numerical value into the white input field below the 'From Unit' dropdown. The field accepts decimals (e.g., 25.5 or 7.8). Clear any existing value first by triple-clicking to select all text.

Choose your target conversion unit

Click the dropdown menu labeled 'To Unit' on the right side. Select your desired output format from the same list of units. The conversion displays instantly in the result field.

View and copy your converted result

Read the converted value in the blue 'Result' box on the right. Click the 'Copy' button next to the result to copy the converted number to your clipboard for pasting elsewhere.

Frequently Asked Questions

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