You don't! They are two different entities - like converting cars to washing machines!
Simply put:
Voltage is equal to resistance multiplied by current
therefore current = voltage divided by resistance
therefore a resistance of 23ohms at 230 volts will draw 10amps current.
Watts is equal voltage multiplied by current
therefore a 230volt fire drawing 10 amps equals 2.3kilowatts or 2300 watts.
Use this for one hour and your electricity usage equals 2.3Kilowatt hours, say costing approx 15p per KWH = 34.5 pence.
Tom.
There are 1000 milliwatts in a watt. There are 1000 watts in a kilowatt. Therefore, there are 1 million milliwatts in one kilowatt.
mw (mega watt) is one million watt and that is a unit of electricity, whereaskwh(kilowatt hour) is rate of consumption of one thousand watt of electricity for one hour.AnswerFirst of all, let's get our symbols correct. There are nounits having the symbols: 'mw' or 'kwh'! Presumably, you are either trying to express a 'milliwatt' (mW) or a 'megawatt' (MW), and a kilowatt hour (kW.h)?You cannot convert either milliwatts or megawatts into kilowatt hours, as they measure completely different quantities!The milliwatt and the megawatt both measure power(not 'electricity'!). The kilowatt measures energy(which is not a 'rate of consumption'!).
It depends on the power rating of the saw. If it is a 1 KW (Kilowatt) saw then it will use 1 KWH (Kilowatt hour) of electricity for every hour it is used. This is equivalent to 1 unit of electricity. If it is 500 W (Watt) then it will use half this. If it is 2 KW it will use double this.
The same as it costs to operate any 1000 watt device or combination thereof. Your electrical bill is rated in kwh or kilowatt hours. (A kilowatt happens to be 1000 watts per hour). So if your local rate is say 8.5 cents per kwh ( a typical amount ) then it will cost 8.5 cents per hour ( plus tax & service fees, etc.!) Check your electric bill and find out your exact per kilowatt/hour rate. Since this type fixture is a commercial fixture, your rate may be a higher commercial rate than most residences.
A small unit of electricity is the watt-hour (Wh), which measures the amount of energy consumed or produced over one hour. It is commonly used for smaller appliances and devices. Another small unit is the kilowatt-hour (kWh), which equals 1,000 watt-hours and is typically used for billing residential electricity usage.
A joule is a watt-second, so one kilowatt for one second is a kilojoule.
1 kilowatt = 1000 watt ==> 1 watt = 0.001 kilowatt
1 kilowatt = 1,000 watts 6 kilowatts = 6,000 watts 6 kilowatt-hours = 6,000 watt-hours
1 kilowatt = 1,000 watts1 watt = 1 joule per second1 hour = 3,600 seconds(1,500 kilowatt-hour) x (1,000 watt / kilowatt) x (1 joule / watt-second) x (3,600 second / hour) =(1,500 x 1,000 x 3,600) x (kilowatt - hour - watt - joule- second) / (kilowatt - watt - second - hour)= 5,400,000,000 joules
true
There are 1000 watts in a kilowatt. The prefix "kilo" in front of the unit watt means one thousand.
To calculate the kilowatt hours (kWh) used by a 30 watt light bulb in 8 hours, we first convert the power to kilowatts: 30 watts = 0.03 kilowatts. Then, multiply this by the time in hours: 0.03 kW * 8 hours = 0.24 kWh. So, 0.24 kWh are used to light a 30 watt light bulb in 8 hours.
1kilowatt = 1000 watts but you cannot compare a kilowatt hour to a watt, the extra dimension of time changes what is being measured. The watt is a measure of power. The watt second and the kilowatt hour is energy. The misunderstanding comes from our use of the term POWER COMPANY for our electricity suppliers. They bill us in kilowatt hours which is energy, not power.
(700 watts) x (10 hours/day) x (30 days/month) x (1 kilowatt / 1,000 watts) =(700 x 10 x 30 / 1,000) (watt - hour - day - kilowatt / day - month - watt) =210 kilowatt-hour / monthWe're guessing that the actual cost of your electric energy is $0.09 per kilowatt-hour.(210 kilowatt-hour / month) x ($0.09 / kilowatt-hour) = $18.90 per month .
A kilowatt is 1000 watts
There are 1000 milliwatts in a watt. There are 1000 watts in a kilowatt. Therefore, there are 1 million milliwatts in one kilowatt.
First find your watt hours and by moving the decimal place change to kilowatt hours. Then multiply that answer by .07 cents per kilowatt hour.