this post was submitted on 22 Nov 2023
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Ok, i'm gonna be that guy.
Newton meters (Nm) is a measure of torque.
While horse power (HP) is a measure of engine power.
You obviously cannot convert one into the other because they mean different things.
Also, when EVs eventually become the mayority, the kilowatt (kW) is gonna take over as the new standard for measuring engine power.
Joules actually are Newton-metres, in a sense. A joule is (genuinely) defined as the work done when a 1 Newton force displaces a mass by one metre. So as long as you're willing to risk the Bureau international des poids et mesures assassinating you for your physics crimes, you can totally pretend that Newton-metres are for measuring energy and Nm/s is a reasonable way to measure power. While you're at it, you should measure torque in Coulomb-volts for the same reason
N*m/s, not Nm. That's energy in joules. Still not power (J/s, which can convert to HP) though...
I think that's the joke: Americans don't care about efficency, only power.