Conversion family

Power conversion calculators

Use power conversions for motors, engines, appliances, and equipment ratings.

These 20 guides cover the most commonly searched unit pairs. Each page includes the exact relationship, worked values, and a reverse-conversion path.

How to use power conversions

Choose the guide whose source unit matches the value you already have and whose target unit matches the format you need. Enter the value without rounding it first, review the displayed relationship, and round only the final answer to the precision your task requires. Popular starting points in this family include BTU Per Hour to Horsepower, BTU Per Hour to Kilowatts, BTU Per Hour to Megawatts.

Power describes the rate at which energy is transferred or used. Watts, kilowatts, horsepower, and BTU per hour appear in electrical, mechanical, heating, and cooling specifications. Match the unit to the equipment rating and distinguish power from energy consumed over time. Unit symbols can be case-sensitive, and similarly named units may belong to different systems, so check the label as well as the abbreviation before relying on the result.