Easy as “Pi” Conversion between Degrees and Radians

Quick Tips

When working through trig functions in articles such as “How to Constrain Dragging to a Circle,” I often find myself having to convert degrees into radians and vice versa.  The formulas are truly simple … but they’re so similar, I often confuse them.  For the record:

radians = degrees * (pi / 180)
degrees = radians * (180 / pi)

However, in a pinch, just use Google.  Type, for example, “90 degrees in radians” (without quotes) into the search field and bingo! instant conversion.

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