Calculate transformer turns ratio and the voltage and current transformation it produces.
Voltage scales with turns while current scales inversely, so power is conserved. Impedance transforms with the square of the ratio, which is the basis of impedance matching in both power and audio applications. The volts-per-turn figure is constant for both windings and is the first thing checked when rewinding or verifying a transformer.
Transformer Turns Ratio
V_p ÷ V_s = N_p ÷ N_s = I_s ÷ I_p; impedance scales with the square of the ratio
V_p ÷ V_s = N_p ÷ N_s = I_s ÷ I_p; impedance scales with the square of the ratio Voltage scales with turns while current scales inversely, so power is conserved. Impedance transforms with the square of the ratio, which is the basis of impedance matching in both power and audio applications.
The volts-per-turn figure is constant for both windings and is the first thing checked when rewinding or verifying a transformer.
This calculator takes 4 inputs: Primary voltage, Secondary voltage, Primary turns, Secondary current. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.