ugh no kidding. That's pretty much the main reason I like smaller projects. Who do I have to talk to in google to add conversions like "10 kilograms/megatons in joules"?
When I was there last summer, the rate conversions project was basically a one person operation.
It doesn't look like Google knows what a megaton is, but even if it did, it'd be the same unit class as joules, so I doubt your conversion could ever work.
