You just need to start teaching kids the metric system. Then when they'll grow up the switch will almost magically happen by itself.
All of my science classes in the rural US from middle school onward were taught entirely in metric, and it had been that way for decades prior. Obviously I'm an adult now, and metric still isn't universal.
All of my science classes in the rural US from middle school onward were taught entirely in metric, and it had been that way for decades prior. Obviously I'm an adult now, and metric still isn't universal.