Horse power

Of course, your shorter versions are perfectly acceptable and still convey the main point of the conversion. You can definitely say:

1. "You've got 197hp, how much would that be in kW?"

Or even simply:

2. "You've got 197, how many kW is that?"


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Yes, both of your sentences are grammatically correct. In conversation, especially in technical discussions or among friends, it's common to speak in a more casual and concise manner. It's understood that "You've got 197" refers to 197 horsepower because of the context, even if it's not explicitly mentioned. "How much would that be in kW?" or "How many kW is that?" are entirely suitable ways to ask for the conversion.