Convert between miles per gallon and liters per 100 kilometers, the two most common ways to express fuel economy. The relationship is inverse: as MPG goes up, liters per 100km goes down, so a simple division does not work and you need the proper constant. For US gallons the conversion is 235.215 divided by MPG, and for the larger Imperial gallon used in the UK it is 282.481 divided by MPG. This tool handles both, converts in either direction, and updates instantly. It is useful when reading a US car review from a metric country, comparing a rental abroad, or checking whether a European car is thirstier than your current one. Choosing the right gallon matters because Imperial gallons are about 20 percent larger. Everything is computed locally in your browser.
Because the units are inverse, it divides a constant by the MPG value. The constant differs for US and Imperial gallons.
Yes. You can choose US or Imperial gallons, since an Imperial gallon is larger and changes the exact formula.
Yes. The conversion runs both ways between MPG and L/100km.
Convert between miles per gallon and liters per 100 kilometers, the two most common ways to express fuel economy. The relationship is inverse: as MPG goes up, liters per 100km goes down, so a simple division does not work and you need the proper constant.
Yes. MPG to L/100km Converter is completely free, with no sign-up and no usage limits.
Yes. MPG to L/100km Converter runs in any modern web browser. There is nothing to download or install.
Yes. MPG to L/100km Converter runs entirely on your device in your browser, so nothing you enter is uploaded to a server.