Transformer Calculator

Formula

Vs/Vp=Ns/Np

Worked example

240V, 1000→100 turns — 24V

Quick answer

What does the Transformer Calculator do?

Calculate secondary voltage from primary voltage and turns ratio.

What is the Transformer Calculator?

Calculate secondary voltage from primary voltage and turns ratio. Use it when you have the required inputs and want a deterministic, repeatable result with the calculation method visible.

How to use this calculator

Enter the values requested by the tool, keep units and time periods consistent, resolve any validation message, calculate, then review the primary answer together with the displayed formula and supporting values.

Formula and method

This calculator uses the deterministic formula Vs/Vp=Ns/Np. Enter the required values, then review the displayed substitution and result breakdown to verify the calculation.

Worked example

240V, 1000→100 turns 24V

Common mistakes to avoid

Check units, decimal points, percentages, signs, date/time order, selector choices, and rounding. For important decisions, verify the result against an independent source or qualified professional when appropriate.