Transformer Turns Ratio Calculator
A transformer steps voltage up or down according to the ratio of turns on its primary and secondary windings, and this calculator ties those quantities together. The turns ratio equals the primary turns divided by the secondary turns, which also equals the primary voltage divided by the secondary voltage. Enter any pair of voltages or turn counts and the tool finds the ratio, then works out the matching secondary voltage. Because power is conserved in an ideal transformer, the current transforms the opposite way, so a step down that halves the voltage doubles the available current. The calculator shows this reflected current and the ratio in a clean form. This is useful for designing power supplies, matching audio impedances, and understanding mains adapters. Enter your known values and read the full picture instantly. Everything runs locally in your browser, so it is private and immediate.
How to use Transformer Turns Ratio Calculator
- Enter primary and secondary voltages, or primary and secondary turns.
- Read the turns ratio between the two windings.
- Read the resulting output voltage.
- Check the reflected current on the opposite winding.
Frequently asked questions
How is the transformer turns ratio found?
It divides the primary value by the secondary value, and because voltage tracks turns, the same ratio applies whether you enter voltages or turn counts.
How does the tool get the output voltage?
It scales the input voltage by the turns ratio, so a step-down ratio lowers the secondary voltage in proportion to the fewer secondary turns.
What is reflected current?
Transformers conserve power, so the current on each side is inverse to the turns ratio; the tool shows how a step-down in voltage raises the secondary current.
What is Transformer Turns Ratio Calculator?
A transformer steps voltage up or down according to the ratio of turns on its primary and secondary windings, and this calculator ties those quantities together. The turns ratio equals the primary turns divided by the secondary turns, which also equals the primary voltage divided by the secondary voltage.
Is Transformer Turns Ratio Calculator free to use?
Yes. Transformer Turns Ratio Calculator is completely free, with no sign-up and no usage limits.
Does Transformer Turns Ratio Calculator work in a web browser?
Yes. Transformer Turns Ratio Calculator runs in any modern web browser. There is nothing to download or install.
Is my data private with Transformer Turns Ratio Calculator?
Yes. Transformer Turns Ratio Calculator runs entirely on your device in your browser, so nothing you enter is uploaded to a server.
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