I purchased one of those Killawatt devices, and want to know how to convert KWH to dollars?

Question

The Killawatt device hooked to my computer says it uses 1.66 KWH. How much does this cost me? My power company says they charge 7.627 cents per KWH, and I run my computer 24/7.

Thanks.

Answer 1

Simple - Multiply kwh by cost to find how much you spend per hour.

1.66*7.627=12.66082 cents per hour.

Answer 2

Jello is correct. That seems very high for a computer, though. Not sure I believe the device you purchased is accurate. I believe Laptop computer uses a fraction of that.

Answer 3

There's no way your computer is using 1.66KW, unless you have a built-in microwave or a coffee pot. If your computer has a 800watt power supply (big), and your monitor was rated at 300watt (big CRT), you could only pull down 1.1Kw/H and that's with everything maxed out. Unless you have a laser printer plugged in, and then it only goes up while you're printing.

Maybe there is a reset button or a calibration setting that is wrong.

A typical computer uses 250watts, a typical monitor uses 250 watts, a ink jet printer on standby uses less than 2 watts, so at $07.627/Kw/H it would use less than 4 cents per hour to run. Even less for a LCD monitor or an efficient system.

A good rule-of-thumb is that if you payed $0.11/Kw/H (average) it costs about a dollar each year per watt to run something 24/7. A 100w bulb running 24/7 would use $100/year to run.

Answer 4

You're only paying 7.6 cents a KWH?...I only wish our rates were that low!

Try using your sleep mode when not in use and do yourself a favor, turn it off when not in use for a period of time like when your asleep.