Transformer Calculator


Calculators are essential tools in various fields, including engineering, finance, and education. They simplify complex calculations and streamline processes, making them indispensable for professionals and students alike. In this article, we’ll introduce a calculator designed specifically for calculating transformer parameters efficiently.

How to Use

Using the transformer calculator is straightforward. Enter the required values into the respective fields, and click the “Calculate” button to obtain the result. Follow the provided labels for each input field to ensure accurate calculations.


The transformer calculator employs precise formulas to compute essential parameters. The formula used varies depending on the calculation required. Below are the fundamental formulas used in transformer calculations:

  1. Turns Ratio (N):
  1. Voltage Transformation Ratio (K):
  1. Current Transformation Ratio (I):
  1. Power Transformation Ratio (P):

Example Solve

Suppose we have a transformer with the following specifications:

  • Primary Voltage (V1​): 120V
  • Secondary Voltage (V2​): 12V
  • Primary Current (I1​): 5A
  • Secondary Current (I2​): Unknown

To find the secondary current (I2​), we can use the formula:

Substituting the given values:


So, the secondary current (I2​) is 50A.


Q: Can this calculator be used for both step-up and step-down transformers?
A: Yes, the transformer calculator is versatile and can handle calculations for both step-up and step-down transformers.

Q: Are the formulas provided applicable to all types of transformers?
A: Yes, the fundamental formulas provided are applicable to various types of transformers, including single-phase and three-phase transformers.

Q: Is there a limit to the input values the calculator can handle?
A: The calculator can handle a wide range of input values typically encountered in transformer calculations. However, extremely large or small values may lead to precision issues.


The transformer calculator presented here offers a convenient solution for performing transformer parameter calculations accurately and efficiently. Whether you’re a professional in the field of electrical engineering or a student learning about transformers, this calculator can aid in your calculations, saving time and ensuring accuracy.

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