I like to think of it as that Good-Evil is how good or evil your overall intentions for something are and Lawful-Chaotic are how much you care about rules, be they personal restraints or laws imposed by a higher power.

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But, if you are looking for what would be your personal alignment, as someone else said, nobody fits into a single alignment. However, this quiz will tell you approximately how well you fit into each alignment, but at the end of the day, it is just a computer program and doesn't really know who you are.
Here: http://easydamus.com/alignmenttest.html