Geometry Calculators
Area, perimeter, volume, and surface area for any 2D or 3D shape. Enter your dimensions — see all measurements with diagrams and formula breakdown. Free.
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Plane Geometry
Area, perimeter, and properties for all 2D shapes — circles, polygons, and composite figures. Enter your dimensions — see every measurement with formula. Free.
24 calculators
Solid Geometry
Volume and surface area for all 3D shapes — spheres, prisms, pyramids, and more. Enter dimensions — see every measurement with formula and net diagram. Free.
23 calculators
Trigonometry
Sine, cosine, tangent, and all inverse trig functions. Enter an angle in degrees or radians — see the exact value, unit circle position, and reciprocal functions. Free.
13 calculators
Plane Geometry
View allCircle Calculator
Area, circumference, diameter and radius. Formula, variable legend, diagram and worked example included. Instant geometry result.
Rectangle Calculator
Area, perimeter and diagonal of rectangles. Formula, variable legend, diagram and worked example included. Instant geometry result.
Square Calculator
Area, perimeter and diagonal of squares. Formula, variable legend, diagram and worked example included. Instant geometry result.
Right Triangle Calculator
Solve right triangles with Pythagorean theorem. Formula, variable legend, diagram and worked example included. Instant geometry result.
Pythagorean Theorem
Apply the Pythagorean theorem to find any side of a right triangle. Enter two sides — get the missing side with proof shown. Free.
Parallelogram Calculator
Calculate area and perimeter of any parallelogram. Enter base, height, and side length — see area = base × height and full perimeter. Free.
Solid Geometry
View allSphere Calculator
Volume, surface area of spheres. Full formula with variable legend, worked example and step-by-step chemistry solution.
Cylinder Calculator
Volume, surface area of cylinders. Formula, variable legend, diagram and worked example included. Instant geometry result.
Cone Calculator
Volume, surface area of cones. Formula, variable legend, diagram and worked example included. Instant geometry result.
Cube Calculator
Volume, surface area of cubes. Formula, variable legend, diagram and worked example included. Instant geometry result.
Rectangular Prism
Calculate volume and surface area of any rectangular prism. Enter length, width, and height — see volume, surface area, and all face areas. Free.
Square Pyramid
Volume, surface area of pyramids. Formula, variable legend, diagram and worked example included. Instant geometry result.
Trigonometry
View allTrig Functions Calculator
Calculate trig function values for any angle. Enter degrees or radians — see sin, cos, tan, cot, sec, csc with unit circle position. Free.
Trigonometric Ratios
Calculate trigonometric function values for any angle. Enter angle in degrees or radians — see sin, cos, tan, and reciprocals. Free.
Inverse Trig Functions
Calculate inverse trigonometric functions (arcsin, arccos, arctan). Enter a ratio — see the angle in degrees and radians. Free.
Trig Function Graphs
Visualize trigonometric function graphs. Full formula with variable legend, worked example and step-by-step chemistry solution.
Sin Calculator
Calculate the sine of any angle in degrees or radians. Enter your angle — see sin(θ), the unit circle position, and related trig values. Free.
Cos Calculator
Calculate the cosine of any angle in degrees or radians. Enter your angle — see cos(θ), the unit circle position, and related trig values. Free.