Online arctan (x) calculator. Inverse tangent calculator.Enter the tangent value, select degrees (°) or radians (rad) and press the = button.

In terms of the standard arctan function, that is with range of (−π/2, π/2), it can be expressed as follows: It also equals the principal value of the argument of the complex number x + iy.

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Calculator to give out the arctan value of a number.

Use this arctan calculator to quickly find the inverse tangent. Whether you're looking for a simple answer to the question "what is an arctan?" or are curious about the integral or derivative of …

Aug 1, 2025 · Calculate Arcsine, Arccosine, Arctangent, Arccotangent, Arcsecant and Arccosecant for values of x and get answers in degrees, ratians and pi. Graphs for inverse …

Nov 14, 2025 · The arctangent function f (x) = arctan (x) assigns to each real number x ∈ R the corresponding angle θ whose tangent equals x. Its graph is a continuous, strictly increasing …

Jan 7, 2026 · Calculate arctan (inverse tangent) with high precision. Get the angle whose tangent equals your input value, displayed in both degrees and radians with interactive unit circle …

Definition of the arctan function in trigonometry. The inverse of the tangent function. The angle whose tangent is a given number.

Calculate the inverse tangent (arctangent) of any number with our free online arctan calculator. Supports both radians and degrees output.