This crop calculator enables you to find out how much land, what length of rows of each crops you need to supply a certain number of members with veggies. It will also show you typical market price of your produce.
It´s easy. Just insert number of planned members that you need to supply, estimate your yields (low, medium, high), how much land you would like to devote to green manure (low, medium, high). Then add requested vegetables and required amount per member and estimated number of weeks of deliveries.