Electricity is the basis of our lifestyle. Calculating the relationships between Watts, Amperes, Volts and Ohms is essential for professionals and students.
On Calcolo.online you will find a series of tools to simplify your electrical calculations without having to do the calculations by hand.
Our calculators help you quickly determine electrical power, energy consumption, power factor and unit conversions. If you are working with electrical systems, you can calculate voltage drop, correctly size cables or determine the equivalent resistance of a circuit.
Each calculator has been developed with reliable sources and engineering/scientific formulas, with the aim of providing accurate and reliable results. If this is not the case, please report it to us by writing to info@calcolo.online
Ohm’s Law defines the relationship between voltage (V), current (I), and resistance (R): V = I × R. It is essential for understanding and calculating basic electrical properties.
To convert watts to amps, divide the power (W) by the voltage (V): Amps = Watts / Volts.
kWh stands for kilowatt-hour, a unit of energy. It is calculated by multiplying power (in kW) by time (in hours): kWh = kW × hours.
kW (kilowatts) is real power, while kVA (kilovolt-amperes) is apparent power. The difference is due to power factor: kW = kVA × Power Factor.
Voltage drop depends on wire length, cross-sectional area, material, and current flow. Voltage drop calculators simplify this complex formula.
Power factor is the ratio between real power and apparent power. It indicates how efficiently electrical power is being used.
Wire size is selected based on current, length of run, voltage, and installation type. Wire gauge calculators are useful for this.
Multiply the device’s power in watts by hours of usage. Divide the result by 1000 to get consumption in kWh.
VA is apparent power and equals voltage multiplied by current. It does not account for power factor or efficiency.
AC (alternating current) changes direction periodically, while DC (direct current) flows in one constant direction.
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