Quaternion Rotation expressed as degrees

[tirpider]

So I have just figured out what a quaterenion is.
(basicly a way to represent rotations for 3 axis using 4 numbers)

A shot in the dark, does anyone know how to convert a quaternion back into degrees?
(without having to go back and finish the degree I never started...)


The KFR3 tag stores keframe info and I am guessing it is using quaternion rotations of joints and the length of bones to 'build' the skeleton for each frame.

I can visualize ( 90 , -0 , 90 ) but (0 , 0 , -0.117461 , 0.993078 ) just makes me ill.....

edit....
Maths - Quaternion to Euler Examples 90 degree steps - Martin Baker
This looks promising, but my spreadsheet hates the formulas.