How big is God?

First of all let's ASSUME he exists and he is in human form. Let us also ASSUME he is the sole creator of all things. The emphasis on "assume" is so this doesn't get flooded with "he's not real" answers, this is purely hypothetical.

Art and popular culture usually depicts God as a giant. To one extent that makes sense when dealing with creation on a large scale. But much of creation happens on a micro scale, even at a sub atomic level. That's going to be kinda fiddly if you have fingers the size of tree trunks. So perhaps he's actually tiny and strong like an ant.

So in your opinion just how big would God need to be to do his job?
How big is God?
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