Transformer Design Calculator

Single Phase EI Transformer Design is a professional electrical engineering application designed for engineers, students, transformer manufacturers, technicians, and hobbyists who need quick and reliable EI transformer design calculations. This app simplifies the complete design process of single-phase EI transformers by providing accurate calculations for core selection, winding design, wire size selection, material estimation, and transformer cost estimation. The application helps save time, reduce manual calculation errors, and generate professional design reports instantly. Key Features: • Single Phase EI Transformer Design • Primary and Secondary Voltage Calculations • Primary and Secondary Current Calculations • VA Rating Calculation • Automatic EI Core Selection • Core Area Calculation • Core Weight Estimation • Core Dimension Calculation • Bobbin Size Recommendation • Turns Per Volt Calculation • Primary Winding Turns Calculation • Secondary Winding Turns Calculation • Primary and Secondary Wire Length Calculation • Primary and Secondary Winding Weight Calculation • Primary and Secondary SWG Selection • Area Occupied by Windings Calculation • Transformer Cost Estimation • Material Requirement Estimation • Design History Management • PDF Report Generation • Dark Mode Support • Light Mode Support • Inch and Millimeter Unit Conversion • User-Friendly Interface • Fast and Accurate Results Transformer Design Parameters: The application allows users to enter basic design parameters such as: • Primary Voltage • Secondary Voltage • Secondary Current Based on these inputs, the application automatically calculates all important transformer design parameters required for manufacturing and educational purposes. Core Design Features: The app automatically selects suitable EI core specifications and provides detailed core information including: • Core Type • Core Area • Core Weight • Core Dimensions • Stack Size • Bobbin Size • Turns Per Volt Winding Design Features: The winding design section provides complete winding details including: • Primary Winding Turns • Secondary Winding Turns • Primary Wire Length • Secondary Wire Length • Primary Winding Weight • Secondary Winding Weight • Primary SWG • Secondary SWG • Winding Occupancy Percentage Cost Estimation: The application estimates transformer manufacturing costs based on calculated core and winding parameters. This helps users evaluate project feasibility and material requirements before production. PDF Report Generation: Generate professional transformer design reports in PDF format with a single tap. Reports can be saved, shared, printed, or used for documentation and manufacturing purposes. Design History: All generated transformer designs can be stored locally for future reference. Users can review previous calculations, compare designs, and manage project records efficiently. Who Can Use This App? • Electrical Engineers • Transformer Manufacturers • Electrical Contractors • Engineering Students • Diploma Students • ITI Students • Industrial Technicians • Electronics Hobbyists • Training Institutes Why Choose This App? • Easy to Use • Accurate Calculations • Professional Design Reports • Clean User Interface • Fast Performance • No Complex Setup • Designed for Practical Use • Suitable for Education and Industry Disclaimer: This application provides calculated and estimated transformer design values for educational, design, and reference purposes. Actual transformer performance and manufacturing results may vary depending on core material quality, winding practices, insulation methods, operating conditions, and production standards. Users should verify all values before manufacturing. Developed By: V. P. Sawant © 2026 V. P. Sawant. All Rights Reserved.