The result of your conversion between thermie and horsepower hour appears here
To convert between Thermie and Horsepower Hour you have to do the following:
First divide 4185800 / 2684519.5 = 1.55923621
Then multiply the amount of Thermie you want to convert to Horsepower Hour, use the chart below to guide you.
Symbol: th
No description
Symbol: hph
No description