Civil Aviation

It is impossible to precisely estimate engine thrust in horsepower.

...But the article then goes to on to provide an estimate.

How accurate is the lb thrust to hp conversion?

The conversion is highly accurate within the context of theoretical calculations. However, real-world factors like engine efficiency, atmospheric conditions, and aerodynamic drag can affect actual performance.

https://calculatorshub.net/mechanical-calculators/lb-thrust-to-hp-calculator/

Also weird that the article compares the power output of 777 engines at cruise against that of the a380's engines at takeoff. If the point of this article is to juxtapose power output with the automotive figures we're familiar with, that's like giving a figure of "a Toyota Camry only makes 35 horsepower while driving at a steady speed down the highway". While perhaps factual, it just makes the comparison more confusing. And if the point is to put the power of aircraft engines into terms we're familiar with, well automotive engines are pretty much advertised by their maximum output.