I am in search of the the correct batter amount and servings of a 2 layer 4 inch square cake yields. everything i can find start with 6inches. anyone have any info?

This is not a scientific breakdown by any means, but I would say approximately 1 1/2 Cups of batter for the pan. 3 cups for two layers. And you're looking at four servings 1" W x 4" L x 2 layers tall.

well since the 4 inch pan" is half of an 8 inch pan I guess it will need half the batter for 8 inch round cake and half of 4 inch is 2 inch so half the amount of the 4 inch pan.