How it works
Fill in the 2 fields above and Transformer Turns Ratio Calculator calculates the result instantly, recalculating as you change any value. It applies the formula Np/Ns = Vp/Vs. The math runs locally in your browser — nothing is sent to a server.
Formula
Np/Ns = Vp/VsExamples
- Primary voltage 120 V, Secondary voltage 12 V → Turns ratio: 10 : 1
Frequently asked questions
How do I use the Transformer Turns Ratio Calculator?
Enter your values in the 2 input fields and the result is calculated automatically as you type. Change any value to see the numbers update instantly.
What formula does the Transformer Turns Ratio Calculator use?
It uses Np/Ns = Vp/Vs. The calculation is performed in your browser using standard, well-established math for accurate results.
Is my data private?
Yes. The Transformer Turns Ratio Calculator runs entirely in your browser. Nothing you enter is uploaded, saved to a server, or shared — it never leaves your device.
Is the Transformer Turns Ratio Calculator free?
Yes, it is completely free with no sign-up, no limits and no watermarks. Like every tool on electronics and the rest of the platform, you can use it as often as you like.
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