Transformer Calculator.
primary / secondary
About
This app simplifies transformer calculations for engineers and students. It accurately computes primary and secondary currents, turns ratios, and secondary voltages based on user inputs for transformer ratings and winding turns.
What's New in Transformer Calculator.
2.7
January 30, 2026
New Feature: Calculate Transformer Resistance Imbalance with IEC/IEEE/NEC support.
In-App Purchases
$3.99
Go Pro
Remove ads and enable Report Sharing
Developer apps
FAQ
What calculations can Transformer Calculator perform?
Transformer Calculator can compute primary and secondary full-load currents, determine the turns ratio, and calculate secondary voltage based on the number of turns and primary voltage. It also helps identify the transformer type.
Is Transformer Calculator free to use?
Yes, Transformer Calculator is free to download and use. It does contain advertisements and offers in-app purchases.
Does Transformer Calculator have ads?
Yes, Transformer Calculator contains advertisements. These ads are displayed within the application.
What devices is Transformer Calculator available on?
Transformer Calculator is available on iPhones and iPads, making it accessible for users on Apple mobile devices.
How often is Transformer Calculator updated?
The latest version, 2.7, was last updated on January 30, 2026. While specific update frequency isn't detailed, this indicates ongoing development.
What is the age rating for Transformer Calculator?
Transformer Calculator has an age rating of 4+, making it suitable for a wide range of users, including younger students learning about electrical concepts.
How accurate are the calculations in Transformer Calculator?
The app is designed for precise computation of transformer parameters, and its high rating of 4.8 stars from 47 ratings suggests users find the calculations to be accurate and reliable.
Can Transformer Calculator handle different phase types?
Yes, Transformer Calculator allows users to select between 1Φ (single-phase) and 3Φ (three-phase) types for their calculations, offering flexibility for various transformer configurations.
