Transformer kVA and amps calculator

Convert transformer kVA to full load amps or amps to kVA, for single phase and three phase.

What this means

Full load amps tell you how much current a transformer can deliver at its rating on each side. Compare measured current with full load amps to see how loaded a transformer is.

Formula used

  • Single phase: I = kVA × 1000 ÷ V
  • Three phase: I = kVA × 1000 ÷ (√3 × V)

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Estimates based on your inputs. Always verify against the manufacturer's data and the codes that apply where you work.

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