Google used to be excellent with units. My test is always `15 mpg in l/100km`, and Google & wolfram alpha were/are the only ones to get it right. (Just tried,

Google used to be excellent with units. My test is always `15 mpg in l/100km`, and Google & wolfram alpha were/are the only ones to get it right. (Just tried, and it works again in Google, after not working for a few years) edit: Spotlight now has it as well. Congratulations to Apple & I need to move the goalpost.