electrical calculators

Transformer Turns Ratio Calculator

Calculate transformer turns ratio and secondary voltage

About this calculator

The Transformer Turns Ratio Calculator determines the relationship between primary and secondary windings in electrical transformers. This tool calculates the turns ratio (Np/Ns) and predicts secondary voltage output based on primary voltage input. It's essential for electrical engineers, technicians, and students working with power systems, helping ensure proper voltage transformation, equipment compatibility, and safe electrical installations. Understanding turns ratio is crucial for transformer selection and circuit design.

How to use

Enter the number of primary winding turns and secondary winding turns to calculate the turns ratio. Input the primary voltage to determine the corresponding secondary voltage output. The calculator automatically computes both the numerical ratio and the expected voltage transformation based on the fundamental transformer equation.

Frequently asked questions

What is transformer turns ratio?

Turns ratio is the relationship between primary and secondary winding turns (Np/Ns), determining voltage transformation in transformers.

How does turns ratio affect voltage?

Voltage ratio equals turns ratio. Higher primary turns create step-down transformation; higher secondary turns create step-up transformation.

Why is turns ratio important?

Turns ratio determines output voltage, current capacity, and power transfer efficiency, essential for proper transformer selection and application.