Trigonometry Calculator

  • Right Triangle Angle and Base Calculator
    Find the inclination angle (degrees and D-M-S) and the base of a right triangle from its height and hypotenuse using arcsin and the Pythagorean theorem.
  • 30 60 90 Triangle Calculator
    Solve any 30-60-90 right triangle. Enter one side to instantly find the other two sides, area, and perimeter using the 1 : √3 : 2 ratio.
  • 30-60-90 Triangle Sides from Hypotenuse
    Find the short and long legs of a 30-60-90 right triangle from its hypotenuse. Uses short = h/2 and long = h·√3/2. Instant, accurate results.
  • 3D Coordinate Rotation Calculator
    Rotate a 3D point about the X, Y or Z axis with right-hand-rule rotation matrices. Apply up to three sequential rotations in degrees or radians.
  • 45-45-90 Triangle Leg from Hypotenuse Calculator
    Find the leg length of a 45-45-90 right isosceles triangle from its hypotenuse using leg = hypotenuse / √2. Also returns area and perimeter.
  • AAS Triangle Calculator
    Solve an AAS triangle from two angles and one side. Computes the third angle, both missing sides, perimeter, and area using the law of sines.
  • 45-45-90 Triangle Calculator
    Solve a 45-45-90 right triangle instantly. Enter a leg or the hypotenuse to get the other side, area and perimeter using the x, x, x√2 ratio.
  • Tree Height Calculator
    Calculate tree height from your distance, the angle to the treetop, and your eye height using trigonometry. Free, fast, and accurate online tool.
  • Angle Conversion Calculator
    Convert angles between degrees, radians and gradians instantly. Enter a value, pick the unit, and get all three equivalents with the exact formula.
  • Trigonometric Functions Calculator
    Compute sin, cos, tan, csc, sec and cot of any angle in degrees or radians instantly. Free trigonometric functions calculator with formulas.
  • Right Triangle Calculator
    Calculate a right triangle's hypotenuse, area, perimeter, and angles from its two legs using the Pythagorean theorem and trigonometry.
  • Law of Cosines Calculator
    Free Law of Cosines calculator. Enter two sides and the included angle to find the third side, the remaining angles, and the triangle area instantly.

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