Electrical Calculators
Latest Calculators
Electric Power Calculator
Calculate the power and monthly consumption of your electrical devices with detailed explanations. What is Electric Power? Electric power (P) is the rate at which electrical energy is consumed or produced. It is expressed in watts (W), where: 1 W = 1 V × 1 A Fundamental Formulas Involved Quantities Knowing these values helps you […]
Electrical Wire Sizing: Standards, Calculations, and Best Practices
The sizing of electrical cables is a critical aspect of electrical system design and installation, directly impacting safety, reliability, and efficiency. Selecting the appropriate conductor size requires consideration of several factors, including the rated current of the load, permissible voltage drop, operating temperature, installation method, and environmental conditions. Proper cable sizing helps prevent overheating, minimizes […]
Convert BTU/h to Watts
Use this calculator to convert BTU to Watts (W). If, instead, you need to convert Watts to BTU per hour use the Watts to BTU/hr Converter. What are Watts? Watts are the unit of measurement for power used in the International System of Units. Watts are used to measure the power of appliances and calculate energy consumption. […]
Watt to Ampere Conversion Calculator
The conversion between Watts and Amps is an essential calculation in electrical engineering and has practical applications in many areas, from electrical system design to power system management. Knowing the correct formulas and how to apply them helps ensure the safety and efficiency of electrical systems. The Watts to Amps calculator we offer helps you […]
All Electrical Calculators
Ohm's Law & Power
Ohm's Law Calculator (coming soon)
Watt to Amp Converter (coming soon)
Amp to Watt Converter (coming soon)
Volt to Watt Converter (coming soon)
Energy & Consumption
Electricity Cost Calculator (coming soon)
Energy Consumption Calculator (coming soon)
kWh to kW Converter (coming soon)
kW to kWh Converter (coming soon)
Wh to mAh Converter (coming soon)
BTU/h to Watt Converter (coming soon)
Wiring & Voltage
Wire Gauge Calculator (coming soon)
Voltage Drop Calculator (coming soon)
Voltage Divider Calculator (coming soon)
F.A.Q.
What is Ohm's Law and why is it important?
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.
How do I convert watts to amps?
To convert watts to amps, divide the power (W) by the voltage (V): Amps = Watts / Volts.
What does kWh mean and how is it calculated?
kWh stands for kilowatt-hour, a unit of energy. It is calculated by multiplying power (in kW) by time (in hours): kWh = kW × hours.
What's the difference between kW and kVA?
kW (kilowatts) is real power, while kVA (kilovolt-amperes) is apparent power. The difference is due to power factor: kW = kVA × Power Factor.
How does voltage drop calculation work?
Voltage drop depends on wire length, cross-sectional area, material, and current flow. Voltage drop calculators simplify this complex formula.
What is power factor?
Power factor is the ratio between real power and apparent power. It indicates how efficiently electrical power is being used.
How do I choose the right wire size?
Wire size is selected based on current, length of run, voltage, and installation type. Wire gauge calculators are useful for this.
How can I calculate my energy consumption?
Multiply the device's power in watts by hours of usage. Divide the result by 1000 to get consumption in kWh.
What are VA (volt-ampere)?
VA is apparent power and equals voltage multiplied by current. It does not account for power factor or efficiency.
What is the difference between AC and DC current?
AC (alternating current) changes direction periodically, while DC (direct current) flows in one constant direction.