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Fuel Efficiency Converter

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About this calculator

About This Fuel Efficiency Converter

What it does

This fuel efficiency converter flips between MPG, kilometers per liter, and liters per 100 kilometers so you can compare vehicle mileage, rental cars, and fleet reports in seconds. It is tuned for drivers, road trippers, and mechanics who jump between US and metric numbers.

Who should use it

  • Drivers shopping for cars across US and international listings

  • Fleet managers tracking gas mileage across different regions

  • Travelers renting cars abroad and logging fuel receipts

How to use it

  1. Enter the fuel economy value you have on hand.

  2. Pick the matching unit, such as MPG, km/L, or L/100 km.

  3. Review the conversions to see the matching values side by side.

Why the converter helps

  • Keeps marketing claims honest by showing true MPG and km/L numbers.

  • Cuts math time when you update spreadsheets or maintenance logs.

  • Helps road trip crews plan fuel budgets with accurate comparisons.

Tips for better mileage tracking

  • Reset trip meters and note actual fill-up data to get a fresh MPG input.

  • Combine this converter with fuel cost calculators for a complete budget.

  • Save the converted numbers in your auto maintenance app for quick lookbacks.

FAQ

Does this handle UK MPG?
This tool focuses on US MPG. To convert UK MPG, first convert to km/L, then multiply by 2.824.

What if my value is in km per 100 km?
Enter the inverse by dividing 100 by your number to get km/L, then use the converter.

Can I use decimals?
Yes. Use one or two decimal places for the best balance between precision and readability.

Last updated: 1.0.0
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