3 Phase Power Cost Calculator

Electricity consumption is a critical aspect of our lives, and for businesses, it often translates into a significant portion of their expenses. Understanding the cost of power usage is essential for effective budgeting and resource management. This 3-Phase Power Cost Calculator is designed to help you quickly and accurately determine the cost of using 3-phase power for various applications.


The formula used to calculate the cost of 3-phase power usage is straightforward:

Cost ($) = Power (kW) × Hours of Usage × Rate ($/kWh)

How to Use:

Using our 3-Phase Power Cost Calculator is a breeze:

  1. Input the power consumption in kilowatts (kW).
  2. Enter the number of hours the power will be used.
  3. Provide the electricity rate in dollars per kilowatt-hour ($/kWh).
  4. Click the “Calculate” button.
  5. The calculator will display the total cost in dollars.


Let’s say you have a 3-phase machine with a power rating of 10 kW. You plan to operate it for 8 hours a day, and the electricity rate is $0.15 per kWh.

  • Input Power: 10 kW
  • Hours of Usage: 8 hours
  • Rate: $0.15 per kWh

Click “Calculate,” and the result will show the total cost, which is $120.


  1. What is 3-phase power?
    • Three-phase power is a type of electrical power that uses three alternating currents, typically 120 degrees out of phase with each other. It’s commonly used in industrial and commercial applications.
  2. Why is it important to calculate power costs?
    • Calculating power costs is essential for budgeting, managing energy consumption, and making informed decisions about power usage.
  3. Can I use this calculator for residential purposes?
    • Yes, you can use it for residential purposes as well, although it’s more commonly used in industrial and commercial settings.
  4. How do I determine the electricity rate in my area?
    • Check your electricity bill or contact your utility provider for the current rate.
  5. What if I have multiple 3-phase devices?
    • You can calculate the cost for each device separately and then add them together for the total cost.
  6. What is the significance of the power factor?
    • The power factor indicates how efficiently electrical power is converted into useful work. A lower power factor may increase costs.
  7. Can I calculate costs for longer periods?
    • Yes, you can. Just input the total hours of usage over the desired period.
  8. Is there a difference between single-phase and 3-phase power cost calculation?
    • Yes, single-phase and 3-phase power have different calculations due to the number of phases.
  9. Are there any energy-saving tips for 3-phase power users?
    • Consider optimizing power usage during non-peak hours and ensuring your devices are well-maintained.
  10. Can I change the currency for rate input?
    • No, this calculator assumes the rate is in dollars, but you can manually convert to your currency if needed.


Understanding the cost of 3-phase power usage is essential for businesses and individuals looking to manage their electricity expenses effectively. Our 3-Phase Power Cost Calculator simplifies this process, allowing you to make informed decisions about your energy consumption and budgeting. Whether you’re running a business or just curious about your power costs, this calculator can be a valuable tool in your arsenal. Start using it today to gain control over your power expenses.

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