Physical Power Calculator

Calculate the power from work and time, with different units. In physics, power is work per time, P=W/t. So power is, what is done by enduring work. The unit of power is the watt, W. This W for the unit watt must not be confused with the previous W for the dimension work. Watt = joule per second, 1W=1J/s. One watt-hour is 3600 joules or watt-seconds, because one hour has that many seconds. Please enter values in two of the three lines, to calculate the third one. For time, it can be one to four values.

Example: 5 megajoules of work should be achived within two hours. Therefore, a constant power of almost 0.7 kilowatts is needed.

Power includes the factor of time, so it is a measure of the intensity with which work is done or energy is released. Power can therefore be viewed as a type of speed, at which a distance is not necessarily covered, but at which something happens. With a higher power, the same work is done in less time, or more work is done in the same time. A greater power can therefore be imagined as involving more units that do the work.
Work or energy and power are often confused with one another, especially in everyday language. This is probably also due to the similarity of their units, watt seconds or watt hours for energy and watts for power. But the difference is important. In simple terms: energy, i.e. joules, watt seconds and watt hours, refer to what is there and power, i.e. watts, refers to how quickly it happens.
Power is often not provided at a constant rate, but changes over time. Therefore, the power specification is often either an average value or a maximum value. For example, a car with a power of 100 kilowatts does not always reach this value, but only at maximum force, so very rarely.