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# How do you convert joules to watt hours?

234

###### 2010-04-03 15:54:46

The conversion factor for J to Wh is 0.000278: J x 0.000278 = Wh

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## Related Questions

energy = power x time.In this case, you can either: * Convert the time to seconds, then multiply. The answer will be in watt-seconds = joules. * Convert the time to hours, convert the watt to kilowatt, then multiply. The answer will be in kilowatt-hours.

365 kilowatt-hours is 1,314,000,000 joules.

1 Joule is 1 Watt-Second. 1 Watt Hour is 3600 Watt-Second or 3600 Joules. 400 Watt-Hours is 1440000 Joules.

You can't convert that, they measure different things. A watt is a joule per second.

A 60 watt lamp uses 60 watt-hours in one hour, so it uses 480 watt-hours, or 0.48 kilowatt-hours in 8 hours. This is also the same as 1.728 mega-joules. (60 joules/second (watts) * 3600 seconds/hour * 8 hours)

Horsepower is a unit of power, but joules is a unit of energy. To convert horsepower to joules, you need an additional time parameter. One horsepower is about 745.7 watts. So a horsepower-hour is 745.7 watt-hours. One watt-hour is 3600 joules. A horsepower-hour is then 745.7 times 3600 = 2684520 joules.

1 Joule = 1 watt-second, therefore, you divide by 3,600,000.

The energy unit is not watts per hour, but watts times hour, simply called watt-hours.One BTU is equal to about 1055 Joules or Watt-seconds; that is about 0.293 watt-hours. Actually there are different definitions of the BTU.The energy unit is not watts per hour, but watts times hour, simply called watt-hours.One BTU is equal to about 1055 Joules or Watt-seconds; that is about 0.293 watt-hours. Actually there are different definitions of the BTU.The energy unit is not watts per hour, but watts times hour, simply called watt-hours.One BTU is equal to about 1055 Joules or Watt-seconds; that is about 0.293 watt-hours. Actually there are different definitions of the BTU.The energy unit is not watts per hour, but watts times hour, simply called watt-hours.One BTU is equal to about 1055 Joules or Watt-seconds; that is about 0.293 watt-hours. Actually there are different definitions of the BTU.

1 watt equals approximately 3.141592 joules

A gallon of gasoline contains about 132x106 joules of energy, which is equivalent to 125,000 BTU or 36,650 watt-hours:

The SI unit for power is the watt, which is equal to joules/second.The SI unit for power is the watt, which is equal to joules/second.The SI unit for power is the watt, which is equal to joules/second.The SI unit for power is the watt, which is equal to joules/second.

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.

1000 Joules = 1000 (watt.sec) x (1/3600) (hour/sec) = 0.2778 watt.hours

100 watts means 100 Joules/Second. So in 24 hours, the bulb would use 24*60*60*100 Joules. so that's 8,640,000 joules

You simply can't convert between units that measure completely different tings, in this case energy (for joules), and power (for watts). The general relationship is: joules = watts x seconds Or equivalently: watts = joules / seconds

Convert the hours to seconds. 1 watt is 1 joule/second, so the energy (in joules) is simply the power (in watts) x the time (in seconds).

It uses 60 joules of energy every second, which is 60 watt-hours or 0.06 kilowatt-hours every hour.

Electricity is measured in watts, volts, amps and joules. Energy use : watt-hours, kilowatt-hours Power (rate): watts, joules Voltage: volts Current: amperes

Watt-hours are converted to amp-hours the same as converting watts to amps. You divide the watts by the voltage and the answer is the amps.

Power use is measured in kilowatt hours. 50w for 6 hours is 300 watt hours or 0.3 units. In the physics lab, power use is measured in joules which is equivalent to a watt second. So 50w for 6 hours (2,160 seconds) is 108,000 joules - or 108 Kj.

Multiply the power you used (in watts) by the length of time you used it (in hours) to get the number of watt-hours of energy you used.

You can't directly convert one to the other. A joule is a unit of energy, and a watt is a unit of power. 1 watt = 1 joule per second.

If the bulb is not being used, 50 watt-hours are wasted, which is 0.05 of a kilowatt-hour, or 0.05 units. In Joules it is 50 x 3600, or 180,000 Joules.

To convert from kilo joules to joules you have divide by 1000 as 1 kilo joule is equal to 1000 joules. E.g. 2 kilo joules equals 2000 joules.

Watts is a unit of instantaneous power. 1 watt is equivalent to 1 newton meter/second. 1 watt exerted for 1 hour is equivalent to 3600 watt seconds, or 3600 joules.

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