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Complex Number Calculator
Add, multiply and find the modulus of two complex numbers.
calculator Free Online Tool
โก Instant Results
๐ Clear Comparison
๐ 100% Free Tool
Sum
Compare Your Options And Get Clear Answers
Add, multiply and find the modulus of two complex numbers.
Complex Number Estimator
Enter your numbers below for an instant estimate.
0
๐ก Tip: (a+bi)(c+di) = (ac-bd) + (ad+bc)i.
How It Works
Key concepts behind this calculator
1
Enter Values
Fill in each field with your own numbers.
2
Calculate
Results update as you change the inputs.
3
Review
Read the breakdown and the explanation.
4
Adjust
Change values to compare scenarios.
Quick Reference Guide
Complex Quick Guide
Typical values for reference.
| z1 real | z1 imag | z2 real | Sum |
|---|---|---|---|
| 3 | 4 | 1 | 4.00 + 2.00i |
| 1 | 1 | 1 | 2.00 + 0.00i |
| 2 | 0 | 0 | 2.00 + 3.00i |
| 5 | -2 | -1 | 4.00 + 2.00i |
| Rule of Thumb | Check inputs | Use as a guide | Round sensibly |
Common Questions
Complex Number Calculator FAQ
Answers to common questions about this calculator.
A number of the form a + bi where i squared equals -1.
Use (ac – bd) + (ad + bc)i.
The distance from the origin, sqrt(a2 + b2).
Yes, then the number is real.