Gallons (Imperial) to Liters
UK gallons into liters
Multiply imperial gallons by 4.54609 to obtain liters. Critical when older British manuals quote mpg in imperial gallons while your spreadsheet tracks L/100km—mixing gallon definitions silently skews payback math.
When to use it
Classic Mini rebuild threads, Commonwealth dairy volumes, or brewery mash schedules. For hardware bought in the United States, default to Gallons (US) to Liters unless the label explicitly states imperial.