Fuel Economy Calculator
Convert fuel economy units (km/l, mpg (US), mpg (UK), l/100km) quickly and accurately. Enter your values, click Calculate, and get the full result with its breakdown — everything is processed on your device, nothing is sent to a server.
All calculations run in your browser. Your data is never sent to our servers.
Example
Example Input
10 km/l → l/100km
Example Output
10
How to Use
- 1Fill in each input field with the values you want to compute.
- 2If there are choices (units, mode, operation), pick what you need.
- 3Click the Calculate button (or press Ctrl+Enter).
- 4The main result and its breakdown appear in the Result area. Click Copy to copy it.
About the Fuel Economy Calculator
The Fuel Economy Converter changes a fuel economy value from one unit to another. Pick the source and target units, enter a number, and get the result. Supports: km/l, mpg (US), mpg (UK), l/100km.
Conversions use standard factors and are computed in the browser, no server.
FAQ
Is this Fuel Economy Calculator accurate?
Yes. It uses standard formulas and runs directly in your browser at full JavaScript precision (plus BigInt/decimal.js for large numbers where needed).
Is my data sent to a server?
No. All calculations happen entirely on your device. No values are sent to or stored on our servers.