Physics

# How do you convert watts to joules?

232425 ###### 2008-11-26 05:59:35

A Watt is power. A Joule is Energy. A Joule is a Watt X Seconds.

Watts are units of Power, whereas Joules are units of Energy. Power is Energy in accordance to time: P = E/t . So One Watt of Power is equal to one Joule per second. P=E/t 1 Watt = 1 Joule/ 1 second

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## Related Questions Joules is a unit of energy; watts is a unit of power. You can't just convert it. The relationship between the two is: power = energy / time in units: watts = joules / second You can't convert from Joules to Watts because Joules is a measure of total energy, and Watts measure energy per second. A joule is a joule, whether it be electrical energy or light energy - although commonly, lamps are not 100% efficient.On the other hand, you can't convert joules directly to watts. Watts means joules per second (joules / second), or equivalently, joules is watts times seconds.A joule is a joule, whether it be electrical energy or light energy - although commonly, lamps are not 100% efficient.On the other hand, you can't convert joules directly to watts. Watts means joules per second (joules / second), or equivalently, joules is watts times seconds.A joule is a joule, whether it be electrical energy or light energy - although commonly, lamps are not 100% efficient.On the other hand, you can't convert joules directly to watts. Watts means joules per second (joules / second), or equivalently, joules is watts times seconds.A joule is a joule, whether it be electrical energy or light energy - although commonly, lamps are not 100% efficient.On the other hand, you can't convert joules directly to watts. Watts means joules per second (joules / second), or equivalently, joules is watts times seconds. a joule is a fixed unit, you dont convert it. However, watts represents the amount of joules per second going past a certain point, such as a lightbulb. you can tell watts by dividing joules by time. or multiplying volts times current 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 You can't convert that, they measure different things. A watt is a joule per second. joules/second = watts on a one-to-one basis. watts = volts X amps, or more appropriately to this question, amps = watts/volts. You would need to know both the wattage and the voltage of the system in question to "convert joules to amps." you know the wattage, since you know the joules(per second). just establish the voltage, and you can solve for amps. You can't really convert that. If you multiply volts and amperes, you get watts, a unit of power. Watts is equivalent to joules/second. If you multiply volts x amperes x seconds, you get joules. Joules (energy) are not equivalent to Watts (power).If something converts 6 Joules every second, it is 6 Watts. If it takes ten seconds to convert 6 Joules, its power is 0.6 Watts.Multiply the Watts by the seconds to find the Joules.CommentYou do not 'consume' power. Power is simply a rate; you cannot consume a rate! You consume energy; the rate at which you consume it is power. That depends what you want to convert it to. Watt is a unit of power. 100 watts is equal to:0.1 kilowatts100 joules/second watts are power, joules are energy; they don't convert. However assuming you meant kilowatt hour, which is energy, 3.6 megajoules. Watts are a measure of power, Joules are a measure of energy. The energy is equal to the power times the time. So if you have a power of 5 watts running for 7 seconds, that is 5x7 Joules of energy, or 35 Joules. Looked at another way, power measures how fast energy is converted. So 35 Joules converted in 7 seconds would be 5 watts of power, but it would need 35 watts to convert that energy in 1 second. Watts is energy output. Watts is joules per second. Joules is energy. "59.4 watts" means "59.4 joules every second"  You can't convert them directly, because they measure different things. The unit for energy is the Joule. Power means how fast energy is transferred; it is measured in Joules/second, also called Watts. That varies. Look at the radio's specifications - most pieces of electrical equipment have the information quite visible, perhaps on the back of the radio. It may give you an amount of watts, or amperes and volts. If it says amperes and volts, multiply the two to convert to watts. Watts means joules per second; for example, a device that uses 100 Watts, uses 100 joules every second.That varies. Look at the radio's specifications - most pieces of electrical equipment have the information quite visible, perhaps on the back of the radio. It may give you an amount of watts, or amperes and volts. If it says amperes and volts, multiply the two to convert to watts. Watts means joules per second; for example, a device that uses 100 Watts, uses 100 joules every second.That varies. Look at the radio's specifications - most pieces of electrical equipment have the information quite visible, perhaps on the back of the radio. It may give you an amount of watts, or amperes and volts. If it says amperes and volts, multiply the two to convert to watts. Watts means joules per second; for example, a device that uses 100 Watts, uses 100 joules every second.That varies. Look at the radio's specifications - most pieces of electrical equipment have the information quite visible, perhaps on the back of the radio. It may give you an amount of watts, or amperes and volts. If it says amperes and volts, multiply the two to convert to watts. Watts means joules per second; for example, a device that uses 100 Watts, uses 100 joules every second. Just divide the energy (in joules) by the time (in seconds). Answer is in watts.Just divide the energy (in joules) by the time (in seconds). Answer is in watts.Just divide the energy (in joules) by the time (in seconds). Answer is in watts.Just divide the energy (in joules) by the time (in seconds). Answer is in watts. Watts is a unit of power; Joules is a unit of energy. Watts means Joules/second, so you would need to know how long a machine that uses 36 watts (for example, certain light-bulbs) is used.36 watts is simply 36 Joules per second; this is the same as 2160 Joules per minute, or 129,600 Joules per hour.Since the electricity bill is measured in kWh instead of Joule (1 kWh = 3,600,000 Ws = 3,600,000 Joule), you might also say that a device that uses 36 watts uses 0.036 kWh every hour. You can't. If you know the voltage (volts) and current (amperes), you can convert to power (watts), but power is not energy. Power is the rate of energy (joules per second). You need to know the time as well to determine energy. 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. The unit for work is joules. It is not clear what you want to convert. That depends on how long you keep it up. '100 watts' means '100 joules every second'. There is no conversion, as joules measures energy and watts measures power -two different quantities! Power is measured in watts, or joules per second. So in 90 seconds, 1200 joules of work is equal to 1200/90 watts or 13.3 watts.

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