Until I came to this board, I only used metric units, like cm and litre (as you do in Finland). Here it seems most people use gallons and inches for measurement. I was told that 1 gallon is about 4 litres. Fine, that's what I've been using for conversions.
But now I've found out that there are two types of gallons, US and Imperial. An Imperial gallon is apparently 4.5 litres, so I assume the 4 litres I was told earlier is US? So which do you use? Which should I use? US or Imperial?
But now I've found out that there are two types of gallons, US and Imperial. An Imperial gallon is apparently 4.5 litres, so I assume the 4 litres I was told earlier is US? So which do you use? Which should I use? US or Imperial?