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Complex Number Calculator

Add, subtract, multiply, or divide two complex numbers.

Add, subtract, multiply, or divide two complex numbers (a + bi) and (c + di), and see the result in both rectangular and polar form.

Daniel Oh By Daniel Oh
Published Last reviewed 1 min read

Inputs

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

(a + bi) ± (c + di), (a + bi)(c + di), and (a + bi)/(c + di) — handled in closed form.

In depth

Add, subtract, multiply, or divide two complex numbers (a + bi) and (c + di), and see the result in both rectangular and polar form.