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Transformer Calculator
Calculate transformer ratios and basic primary/secondary electrical values for study and field planning.
Professional workflow
Work through transformer turns ratio and voltage/current relationships quickly.
变压器计算器
计算变压器的电压比、匝数比和电流比
公式:
V₁/V₂ = N₁/N₂ = I₂/I₁
电压比 = 匝数比 = 电流反比
初级侧
次级侧
💡 输入已知值，系统会自动计算未知值
Frequently asked questions
What does transformer ratio mean?
It compares primary and secondary voltage or turns counts.
Can current change across a transformer?
Yes. In an ideal transformer, voltage and current change inversely while power is conserved.
Is this for ideal transformers?
Basic calculations generally assume ideal behavior unless losses are specified.
Can I size real equipment with it?
Use it as a reference only; real equipment needs code and manufacturer data.