Convert Horsepower-hour to Kilowatt-hour
Horsepower-hour
Definition: A horsepower-hour (symbol: hp·h) is the energy equivalent of one horsepower sustained for one hour, equal to 2.685×10⁶ joules.
History/Origin: Originated during the Industrial Revolution to measure mechanical energy output from engines.
Current Use: Used in mechanical, automotive, and locomotive engineering.
Kilowatt-hour
Definition: A kilowatt-hour (symbol: kWh) equals 1,000 watt-hours, or 3.6 million joules.
History/Origin: Adopted as a practical energy unit by electrical utilities in the 20th century.
Current Use: Used globally for billing electricity usage and measuring large energy outputs.