Yes. A gram is a gram is a gram. A gram is simply a unit of weight measurment. It doesn't matter what you have chemically, it you have a gram of it, you have a gram of it. A gram of Oxandrolone (Anavar) = 1000mg, and a gram of crack = 1000mg.... you get the idea.
theres no need to "just wonder".. if your asking, theres a real reason, like you wanna make some up =P
But yes, its 1000mg.
You take that 1g of var, mix it with 9.8ml of peg300, put it in some boiling water, that is removed from the heat, swirl it around till its clear, you may have to reheat the water. When its clear, set it aside and let the peg cool to room temp, then "slowly" add 32.2ml everclear. You should end up with 50ml of liquid var, dosed at 20mg/ml