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About this tool
Convert miles per US gallon to kilometers per liter instantly. Free, bidirectional, and fully in-browser.
Convert miles per us gallon to kilometers per liter using km/L = mpg × 0.425144 — type any figure to convert it instantly. This Miles per US gallon to Kilometer per liter converter is a client-side tool: it applies the exact fuel economy formula (km/L = mpg × 0.425144) in your browser, updates the moment you type, and works in both directions — edit either field, or press swap, to convert kilometers per liter back to miles per US gallon. A reference table lists common miles per us gallon values already converted, and nothing you enter is sent to a server.
Open Miles per US gallon to Kilometer per liter Converter on AltFTool — it loads instantly in your browser.
Type the value you want to convert into the Miles per US gallon field.
Read the equivalent in kilometers per liter in the result field, and copy it if needed.
Use the decimal-places slider for more or less precision, or press swap to convert kilometers per liter to miles per US gallon.
The result updates as you type, and the swap button flips the conversion to kilometer per liter → miles per us gallon without reloading.
The conversion uses the exact formula km/L = mpg × 0.425144, so the number matches a manual calculation to the decimal places you choose.
A slider sets 0–10 decimal places, and very small or very large results switch to scientific notation instead of rounding to zero.
Everything runs locally in your browser — no upload, no account, no limit on conversions.
Use the formula km/L = mpg × 0.425144. For example, 40 mpg = 17.006 km/L.
km/L = mpg × 0.425144. This tool applies it automatically and shows a worked example: 40 mpg = 17.006 km/L.
Yes. Press the swap button, or type into the kilometer per liter field, and the tool converts kilometers per liter to miles per US gallon using the inverse of the same relationship.
It uses the standard fuel economy definition, not a rounded approximation, so results are exact to the number of decimal places you select.
Yes. The converter is a browser-side script with no network calls: your values are never uploaded, and once the page has loaded it keeps working without a connection.
Add the Miles per US gallon to Kilometer per liter Converter widget to your blog or website — free, responsive, no signup. Just keep the “Widget by AltFTool” credit link visible.
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