- Volume Calculator
- Area Calculator
- Perimeter Calculator
- Surface Area Calculator
- Circle Calculator
- Rectangle Calculator
- Triangle Calculator
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Angle and Hypotenuse from Base and HeightCompute the inclination angle (in decimal degrees and DMS) and the hypotenuse of a right triangle from its base and height legs. Free trig calculator.
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Base & Hypotenuse to Angle and Height CalculatorFind a right triangle's inclination angle (decimal degrees and D M S) and height from the base and hypotenuse using cos and the Pythagorean theorem.
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Right Triangle Hypotenuse and Height from Base and Slope AngleCompute the hypotenuse c and height b of a right triangle from the base a and slope angle theta. Uses c = a / cos(theta) and b = a * tan(theta).
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Right Triangle Base and Hypotenuse from Angle and Height CalculatorGiven the angle and the opposite height of a right triangle, compute the adjacent base and the hypotenuse using tangent and sine in degree mode.
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Base and Height from Hypotenuse and Angle (Right Triangle)Compute the base (adjacent) and height (opposite) sides of a right triangle from the hypotenuse and inclination angle using a = c·cos θ and b = c·sin θ.
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Area and Perimeter of a Triangle from Three CoordinatesFind the area and perimeter of a triangle from the (x, y) coordinates of its three vertices using the shoelace formula and Euclidean distances.
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Triangle Incircle (Inscribed Circle) Radius & Area CalculatorCompute a triangle's inscribed circle (incircle) radius, diameter and area, plus the triangle area and the incircle-to-triangle area ratio from three side lengths.
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Triangle Circumcircle CalculatorCompute a triangle's circumscribed circle radius, diameter and area from its three side lengths, plus triangle area and the area ratio. Free online tool.
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Triangle Area from Three Sides (Heron's Formula) CalculatorCalculate the area of any triangle from its three side lengths using Heron's formula. Enter sides a, b and c in the same unit and get the area instantly.
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Triangle Area from Two Sides and Included AngleCompute a triangle's area, perimeter and height from two sides and the included angle. Uses S = (1/2)ab sin(theta) plus the law of cosines. Degrees or radians.
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Triangle Area Calculator (Base and Height)Compute the area of a triangle from its base length and perpendicular height using S = 1/2 x a x h. Unit-agnostic; fast and accurate.
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Right Triangle Angle and Base CalculatorFind 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.
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30 60 90 Triangle CalculatorSolve 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.
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AAS Triangle CalculatorSolve an AAS triangle from two angles and one side. Computes the third angle, both missing sides, perimeter, and area using the law of sines.
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45-45-90 Triangle CalculatorSolve 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.
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Right Triangle CalculatorCalculate a right triangle's hypotenuse, area, perimeter, and angles from its two legs using the Pythagorean theorem and trigonometry.
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Isosceles Triangle CalculatorCalculate the area, altitude, perimeter, base angles and vertex angle of an isosceles triangle from its equal side length and base.
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Law of Cosines CalculatorFree Law of Cosines calculator. Enter two sides and the included angle to find the third side, the remaining angles, and the triangle area instantly.
