# GLKit Math Utilities ## Overview Math routines without a specific type associated with them. ## Topics ### Converting Angles [`GLKMathDegreesToRadians`](/documentation/GLKit/GLKMathDegreesToRadians(_:)) Converts an angle measured in degrees to radians. [`GLKMathRadiansToDegrees`](/documentation/GLKit/GLKMathRadiansToDegrees(_:)) Converts an angle measured in radians to degrees. ### Projecting Vectors [`GLKMathProject`](/documentation/GLKit/GLKMathProject(_:_:_:_:)) Projects a point in object space into the window coordinate system. [`GLKMathUnproject`](/documentation/GLKit/GLKMathUnproject(_:_:_:_:_:)) Projects a point in view space into object space. ### Obtaining String Descriptions [`NSStringFromGLKMatrix2`](/documentation/GLKit/NSStringFromGLKMatrix2(_:)) Returns a string that represents the contents of a matrix. [`NSStringFromGLKMatrix3`](/documentation/GLKit/NSStringFromGLKMatrix3(_:)) Returns a string that represents the contents of a matrix. [`NSStringFromGLKMatrix4`](/documentation/GLKit/NSStringFromGLKMatrix4(_:)) Returns a string that represents the contents of a matrix. [`NSStringFromGLKVector2`](/documentation/GLKit/NSStringFromGLKVector2(_:)) Returns a string that represents the contents of a vector. [`NSStringFromGLKVector3`](/documentation/GLKit/NSStringFromGLKVector3(_:)) Returns a string that represents the contents of a vector. [`NSStringFromGLKVector4`](/documentation/GLKit/NSStringFromGLKVector4(_:)) Returns a string that represents the contents of a vector. [`NSStringFromGLKQuaternion`](/documentation/GLKit/NSStringFromGLKQuaternion(_:)) Returns a string that represents the contents of a quaternion. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)