Calculate amps, volts, and watts. Our calculator helps you calculate amps, volts, and watts.
How to calculate amps and volts to watts
Calculating amps, volts, and watts is relatively simple as the three measurements are closely connected.
watt = ampere x volt
As we can see, you multiply amps and volts to get watts. We can also rearrange the formula to find either amps or volts:
ampere = watt / volt
volt = watt / ampere
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What are amps and volts?
Amps and volts are fundamental units in electrical engineering that play a central role in understanding electric current and voltage. Amps, often just called “amp”, measure electrical current and indicate how many electrons are flowing through a conductor per second. This concept is especially important when assessing power consumption and the capacity of electrical devices. Meanwhile, volts measure electrical potential. It indicates how much force is available to drive the current through a circuit. Together, amps and volts give a complete picture of electrical performance, which is crucial to understanding how different devices and systems work.
Converting amps to watts
When it comes to converting amps to watts, this is a critical calculation in many electrical applications. Watts is a unit of power, and it tells us how much energy is consumed or produced over time. To convert amps (current) to watts (power), you need to know the voltage (measured in volts) in the circuit. The basic formula is: watt = ampere x volt.
What is volt-ampere?
The term volt-ampere is also important when discussing electrical power. While watts represent the actual power consumed in a circuit, volt-amperes refer to the ‘apparent’ power, often in the context of AC (alternating current) circuits. This distinction is critical in understanding electrical systems, especially in terms of load and capacity planning.
What are ampere-hours?
Ampere-hours is another key concept in the world of electricity. It measures the amount of electric charge that flows through a component over a given period. This concept is especially relevant for batteries and energy storage systems, as it gives a measure of the battery’s capacity — or how long it can deliver a certain current before needing to be recharged. One ampere-hour means that 1 amp flows through a component for one hour.