You will need more information to determine this. An appliance should have a special tag or etching on their back/bottom (or some other inconvenient location) that states what the wattage is. Look for the part that gives the watts or as an alternative, the amps used in operation.
Assuming you are concerned about electricity usage, keep in mind that your power consumption is measured in kilowatt-hours, or 1000 x watt-hours.
Looking at the electrical definition of the watt (see http://en.wikipedia.org/wiki/Watt) one watt is defined to be 1 amp x 1 volt. Here is a sample calculation:
Assume your A/C takes 10.0 amps to operate at 120 volts of house current. That turns out to be 10.0 x 120 = 1,200 watts of energy, which is equivalent to 1.2 kilowatts. So, if you operate the A/C for 1 hour, you have consumed 1.2 kilowatt-Hours. If you operate this 10 amp A/C for 24-hours, you will consume 24 hours x 1.2 kilowatt = 28.8 kilowatt-hours in one day.
5.5 watts is 0.0055 kilowatts. in one hour the equipment uses 0.0055 kilowatt-hours.
60
One hp is approximately 756 watts.
Your question is rather like asking "How many miles per hour do you do in a week?" You don't consume watts over time, it's a measure of how many joules of energy you consume over time.
A typical iron uses 1000 watts all the time the heating element is working. It is controlled by a thermostat so the element might be on for a quarter of the time. In an hour the iron might consume 250 watt-hours or 0.25 of a unit.
5.5 watts is 0.0055 kilowatts. in one hour the equipment uses 0.0055 kilowatt-hours.
60
One hp is approximately 756 watts.
Your question is rather like asking "How many miles per hour do you do in a week?" You don't consume watts over time, it's a measure of how many joules of energy you consume over time.
A typical iron uses 1000 watts all the time the heating element is working. It is controlled by a thermostat so the element might be on for a quarter of the time. In an hour the iron might consume 250 watt-hours or 0.25 of a unit.
Watts are units for measuring the rate of energy consumption. So it is meaningless to speak of how many watts something consumes in a length of time. (It would be like asking how many miles per hour a car drives in an hour.)Energy consumption may be measured in kilowatt-hours. A typical microwave consumes 1500 watts, which would be 1.5 kilowatt-hours in one hour.
A small coffee grinder 100-200 watts.
none
Power = volts x amps, so your example will be 12 x 0.5 = 6 watts. (500mA = 0.5 amp) Note we don't talk of 'watts per hour', it is just watts. 1 watt = 1 joule per second
One kilowatt hour (kWH) is the amount of power used at the rate of 1000 watts for one hour. Therefore a device of 120 watts running for one hour would consume 120 / 1000 x 1 = 0.12 kWH
1 kilowatt (kW) is equal to 1 kilowatt-hour (kWh) when used continuously for one hour. So, if you use a 1 kW appliance for one hour, it will consume 1 kWh of electricity.
1230w