Amperes, Volts, Watts, Horsepower, BTUs
The many measures used in discussing energy, power and heat are all related and are not that complicated when you take a close look at them. After this you should know what a kWh is. If not, read more about kWh.
Brief overview
1 watt = 1 volt X 1 ampere
1 watt = 3.41 BTU
746 watts = 1 horsepower
Ampere: Measure of current.
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Measures of power
- Watts, Kilowatts, Megawatts and Gigawatts (terms go up in measures of 1,000)
1 kilowatt (kW)= 1,000 watts
1 megawatt (MW)= 1,000 kW
1 gig watt (GW)= 1,000MW - Horsepower (see above)
Measures of energy
- Watt hours, kilowatt hours
1 kilowatt hour = the amount of energy donated to a load of one kW in one hour.
Measures of heat
- BTU: quantity of heat needed to raise the temperature of 1 pound of water 1F. It is approximately the amount of heat created by lighting a common kitchen match.
| To Convert a measure of | Into | Use this equation: |
|---|---|---|
| Kilowatts | Watts | Kilowatts x 1000 |
| Watts | Kilowatts | Watts x 0.001 |
| Megawatts | Kilowatts | Megawatts x 1000 |
| Kilowatts | Megawatts | Kilowatts x 0.001 |
| Gigawatts | Megawatts | Gigawatts x 1000 |
| Megawatts | Gigawatts | Megawatts x .001 |
| Gigawatts | Watts | Gigawatts x 1 billion |
| Watts | Btu/hour | Watts x 3.413 |
| Btu/hour | Watts | Btu/hour x 0.293 |
| Kilowatts | Btu/hour | Kilowatts x 3414 |
| Btu/hour | Kilowatts | Btu/hour x 0.000293 |
| Watts | Horsepower | Watts x 0.00134 |
| Horsepower | Watts | Horsepower x 746 |
| Kilowatts | Horsepower | Kilowatts x 1.34 |
| Horsepower | Kilowatts | Horsepower x 0.746 |
You can do the math with a calculator, or forget all this and download a conversion tool.
