Fatalism actually presupposes libertarian free will (or something like it). Calvinism does not. So with fatalism, one is going to end up with the same fate no matter what they want or try to do. Even against their will, what will occur will inevitably occur.

So for example, one is fated to die tomorrow at 6 pm, death by an evil demon. *It may be different possible futures in which this takes place*, e.g. she could be run over by a car, stabbed in the back, death by poison, etc. The point is, that person will die tomorrow at 6 pm.

Calvinism, on the other hand, fits well with something like compatibilism. So there is only one possible future, *and there is only one possible means* of bringing that future into existence. So, Calvinism is actually more restrictive than fatalism, but it is surely distinguished from fatalism for these (and other) reasons. One other reason might be that most forms of fatalism are impersonal determinism's, whereas Calvinism is a form of personal determinism. Hope that helps.

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Caleb
Trinity Baptist Church
Spokane, WA