Complex Numbers Calculator

Add, subtract, multiply, and divide complex numbers. Free and instant.

Complex Numbers Calculator

Add, subtract, multiply, and divide complex numbers. Enter as a+bi or a, b.

First number (a + bi)

+i

Second number (a + bi)

+i

Result

4-2i

For polar form conversion, use the Polar–Cartesian converter.

Complex Numbers Calculator

This free complex numbers calculator adds, subtracts, multiplies, and divides two complex numbers. Enter real and imaginary parts for each number. For polar form conversion, use the Polar–Cartesian converter. No sign-up required.

  • Add, subtract, multiply, divide
  • Real and imaginary part inputs
  • Link to polar–Cartesian converter
  • Copy and reset

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Added Oct 16, 2026

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