Complex Number Calculator

Calculate with complex numbers

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Enter two complex numbers (a + bi) and choose an operation.

How to Use Complex Number Calculator

Enter numbers

Enter two complex numbers (a+bi).

Select operation

Choose add, subtract, multiply, etc.

Calculate

See the result.

Why Choose AllTools Complex Number Calculator?

  • ✓ Add/subtract
  • ✓ Multiply/divide
  • ✓ Modulus
  • ✓ Argument
  • ✓ Conjugate
  • ✓ No data stored

Why Use This Tool

  • ★ Instant calculations with no server round-trip
  • ★ Completely free with no usage limits
  • ★ No account or registration required
  • ★ Accurate results using standard mathematical formulas
  • ★ Works on any device including phones and tablets

Related Resources

Scientific calculator → Vector calculator → Matrix calculator →

Frequently Asked Questions

What is a complex number? ▼
A number of the form a + bi where a is real, b is imaginary, and i is the square root of -1.
What operations are supported? ▼
Addition, subtraction, multiplication, division, magnitude, conjugate, and phase angle.
Does this work on mobile? ▼
Yes. All AllTools calculators are fully responsive and work on phones and tablets.

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