Transformer and coil calculator Transformer and coil calculator

Transformer and coil calculator

Find ideal secondary voltage or the whole number of turns needed for a target voltage.

Calculator settings

Ideal ratio, not a winding designTurns are rounded up in target-voltage mode; the report shows the resulting ideal voltage. Core size, frequency, wire gauge, heating, insulation and losses are not calculated. VA is apparent power, not necessarily real power in watts. This is not a mains-safety or manufacturing assessment.

Result

Secondary voltage
22 V
Turns ratio
1:0.1
Ideal secondary current
10 A
Apparent power
220 VA
Secondary turns
100
Formula
Vs/Vp = Ns/Np, ideal power is conserved

Ideal transformer turns calculator

Use the calculator for quick educational transformer and coil estimates.

Real transformers have losses, saturation, heating and insulation limits that this simple model does not include.

Quick start

Find ideal transformer output voltage or secondary turns.

  1. Choose the value to find
  2. Enter primary values and the target or secondary turns
  3. Calculate and review the whole-turn rounding
✓ Use the calculator to turn input values into a clear, repeatable result.
✓ Keep units and assumptions visible so the calculation can be checked later.
✓ Copy the result or key numbers for reports, messages or spreadsheets.
✓ Reset to defaults when you want to compare another scenario from a clean state.
✓ Calculators run in the browser and are useful for quick estimates before formal checks.
✓ For finance, health, engineering or legal decisions, verify important results with a specialist or official source.

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