We’ve already discussed the difference between kW and kWh in a previous post: kW being kiloWatt – a measure of power; kWh being kiloWatt-hour – a measure of energy.

## British Thermal Units (BTU)

A BTU can be approximated as the heat produced by burning a single wooden kitchen match or as the amount of energy it takes to lift a one-pound weight 778 feet (237 m).

One BTU is approximately:

- 1.054 to 1.060 kJ (kilojoules)
- 0.293071 W·h (watt hours)
- 0.000393081 hp

One Watt is approximately:

- 3.41214 BTU/h

Now the question is how to convert between British Thermal Units (BTU) and kW.

## Conversion Formulas for BTU/h to kWh

Using this information, we can understand the following formulas:

Watt-hour = BTU/hour * 0.29307107 BTU/hour = Watt-hour/0.2930717

Hope this helps!

references:

- Wikipedia | British Thermal Units