Fuel Economy Converter
Use the Fuel Economy Converter to convert L/100 km, km/L, US mpg, and imperial mpg quickly on mobile or desktop.
Fuel Economy Converter
Tool inputs are not stored, and private values stay out of analytics.
Result
How it works
The tool works by using reciprocal fuel-economy equations with separate US and imperial gallon constants. Conversion runs locally in the browser, and entered values are not sent to analytics or stored in the database.
Helpful details
Quick guide for better results
Use it to convert values between common measurement units directly in the browser.
When this page is useful
Unit Converter is built for one clear task, so you can get a result without leaving the page or creating an account.
- Convert measurements for study, work, or shopping.
- Compare units from different sources.
- Get a quick copyable result.
How to get a clearer result
Enter the value and choose the starting and ending unit carefully. Similar unit names can produce very different results.
- Use units from the same measurement type.
- Review decimal precision.
- Check the unit symbol before copying.
Common mistakes before relying on the result
The common mistake is choosing a similar-looking unit or mixing metric and imperial systems.
- Review the unit before relying on the result.
- Use a rounding level that fits the task.
- Do not use a quick conversion alone for critical measurements.
What happens to your input
Values are converted in the browser and are not stored.
- Measurement values are not saved.
- No login is required.
- Results appear locally and quickly.
Examples
Practical example
10 L/100 km converts to about 23.52 US mpg.
Unit check
Confirm unit names and symbols, especially bits versus bytes and US versus imperial gallons.
FAQ
How do I use the Fuel Economy Converter?
Enter a value, select the From and To units, then convert.
Can it convert negative values?
Yes for linear units that allow them; fuel economy requires a positive value.
Is the entered value stored?
No. Conversion runs in the browser and input values are not stored.