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Free online complex numbers calculators. Fast, accurate, and always free to use.
Use our free complex number calculator to explore all properties of a complex number or perform arithmetic operations between two complex numbers.
Use our free complex addition calculator to add two complex numbers (a+bi) + (c+di) with a detailed step-by-step breakdown.
Use our free complex subtraction calculator to subtract two complex numbers (a+bi) − (c+di) with a detailed step-by-step breakdown.
Use our free complex multiplication calculator to multiply two complex numbers (a+bi) × (c+di) using FOIL with a detailed step-by-step breakdown.
Use our free complex division calculator to divide two complex numbers (a+bi) ÷ (c+di) using the conjugate method with a detailed step-by-step breakdown.
Use our free polar form calculator to convert rectangular complex numbers to polar form z = r·e^(iθ), convert polar to rectangular, and compute powers using De Moivre's theorem.
Use our free rectangular form calculator to convert polar complex numbers to rectangular (a+bi) form, view properties of a rectangular complex number, or add two complex numbers.
Use our free Euler formula calculator to evaluate e^(iθ) = cosθ + i·sinθ, explore Euler's identity, special angle values, cis(θ), and general complex exponentials e^(a+bi).
Addition, subtraction, multiplication, and division calculators.
Simplify, compare, and calculate with fractions.
Decimal conversion, rounding, and arithmetic calculators.
Calculate powers, square roots, and nth roots.
Solve equations, inequalities, and algebraic expressions.
Area, volume, perimeter, and shape calculators.
Sine, cosine, tangent, and trigonometric functions.
Mean, median, mode, standard deviation, and more.
Prime numbers, factorization, factors, multiples, and LCM calculators.
Binary, decimal, and hexadecimal converters and arithmetic.
Arithmetic and geometric sequences and series.
Matrix operations, determinants, and inverses.
Derivatives, integrals, and limits calculators.
Vector operations, eigenvalues, and linear systems.
Round numbers to specified precision and significant figures.
Odd math tools and general-purpose calculators.