1 joule = 1 watt-second
kilo = 1,000
hour = 3,600 seconds
1 kilowatt-hour = 1,000 x watt x (3,600 seconds) = 3,600,000 joules
1 kwh = 3,600,000 Joules
1 joule = 1 ws (watt-second); since 1 kw = 1000 w, and 1 h = 3600 seconds, it follows that 1 kwh = 3,600,000 ws or joule.
1 calorie = 4.184 joules 1 kilowatt-hour (kWh) = 3.6 million joules 1 British thermal unit (BTU) = 1,055 joules
To convert from energy units (kWh) to joules, you can use the conversion factor: 1 kWh = 3.6 × 10^6 joules. Therefore, 250 kWh is equal to 9 × 10^8 joules.
7.2×106 J. 1 kWh is equal to 3.6×106 J, and 1 J is equal to 2.778×10-7 kWh. 2 kWh is about 1/18 the amount of energy released from the combustion of a gallon of gasoline, and about 1.6 times the amount of energy released by the detonation of one kilogram of TNT. As of November, 2010, that amount of energy would cost about $0.36 to a resident of New York -- up from about $0.26 in 1990.
1 kwh = 3,600,000 Joules
1 joule = 1 ws (watt-second); since 1 kw = 1000 w, and 1 h = 3600 seconds, it follows that 1 kwh = 3,600,000 ws or joule.
1 calorie = 4.184 joules 1 kilowatt-hour (kWh) = 3.6 million joules 1 British thermal unit (BTU) = 1,055 joules
To convert from energy units (kWh) to joules, you can use the conversion factor: 1 kWh = 3.6 × 10^6 joules. Therefore, 250 kWh is equal to 9 × 10^8 joules.
7.2×106 J. 1 kWh is equal to 3.6×106 J, and 1 J is equal to 2.778×10-7 kWh. 2 kWh is about 1/18 the amount of energy released from the combustion of a gallon of gasoline, and about 1.6 times the amount of energy released by the detonation of one kilogram of TNT. As of November, 2010, that amount of energy would cost about $0.36 to a resident of New York -- up from about $0.26 in 1990.
To convert joules to kilowatts, you need to divide the energy in joules by 3,600,000 (since 1 kWh = 3,600,000 J). Therefore, 4180 J is 0.00116 kWh.
To convert Joules to kilowatt-hours (kWh), divide the number of Joules by 3,600,000 (the number of Joules in a kWh). For example, to convert 1,000,000 Joules to kWh, you would divide 1,000,000 by 3,600,000 to get approximately 0.278 kWh.
1 KWh is 1000 joules- hours per second so you change hours to seconds to get; 1 KWh = 1000 x 3600 joules - sec per sec which is 3600000 joules.
A therm is an energy unit (equal to 100000 BTU) while kilowatts are power (energy/time). 1 watt = 1 Joule/second, and 1 kilowatt = 1000 Joules/second. The kilowatt hour is an energy unit (power X time = energy). 1 therm = 29.31 kWh
Kilowatt-hour (KWh) which is an energy unit equivalent to a power of 1000 Watts running for 1 hour = 1000x3600 Joules =3.6million Joules. 1 kWh is sometimes called in the trade " 1 unit".
Depending on the power of the lighting system; 1 joule (J) = 2,777 778.10-7 kWh.
1 kWh = 1,000 watt-hour1 watt = 1 joule per second1 hour = 3,600 seconds(1,000 watt-hour) = (1,000 joule/second) x (3,600 second/hour) = 3,600,000 joules