Transformer Efficiency Calculator
Transformers play a vital role in electrical systems, but no transformer is 100% efficient. The Transformer Efficiency Calculator helps you quickly calculate efficiency, iron losses, copper losses, and total losses, making it perfect for electrical engineers, technicians, and students working on performance analysis or maintenance reports.
Calculate Losses & Efficiency Instantly
Enter the output power (in kW).
Enter iron loss and copper loss in watts.
Click Calculate Efficiency.
The calculator instantly shows the total losses and efficiency percentage.
🧭 How to Use
FAQ
Q1. What is transformer efficiency?
A. It’s the ratio of output power to input power, expressed as a percentage — showing how effectively the transformer converts electrical energy.
Q2. What causes losses in a transformer?
A. Mainly iron (core) losses and copper (winding) losses, caused by magnetic hysteresis, eddy currents, and winding resistance.
Q3. Why is transformer efficiency important?
A. Higher efficiency reduces energy loss, operating costs, and heat generation — crucial for industrial and utility applications.
Q4. Can this calculator be used for any transformer?
A. Yes, it’s suitable for single-phase and three-phase transformers as long as you know the power output and losses.
A. Yes, it’s suitable for single-phase and three-phase transformers as long as you know the power output and losses.